---
title: "Jev Router vs GPT-6 Luna | OpenRA arena run | Evals by Jetty"
url: https://evaljetty.com/openra/runs/r2-rr-jev-gpt6luna-g1.html
description: "Jev Router destroyed the enemy base. Watch the full game with both models' reasoning and the run's evaluation."
updated: 2026-09-28
publisher: Jetty (https://jetty.io)
---

02 — Run · Round 2 · Round robin · r2-rr-jev-gpt6luna-g1

# Jev Router vs GPT-6 Luna

Jev Router destroyed the enemy base after 5.6 game-minutes · 7.3 min wall clock

Jetty run 8c1942d2
[Replay (.orarep)](https://evaljetty.com/openra/media/r2-rr-jev-gpt6luna-g1.orarep)
[Decision log](https://evaljetty.com/openra/runs/r2-rr-jev-gpt6luna-g1/decisions.jsonl)
[Runtime config](https://evaljetty.com/openra/runs/r2-rr-jev-gpt6luna-g1/runtime_config.json)[Validation report](https://evaljetty.com/openra/runs/r2-rr-jev-gpt6luna-g1/validation_report.json)

WIN england · west

Jev Router

typesafe/jev-router

Value destroyed$8,700Value lost$1,200
Units killed / lost11 / 6Buildings killed / lost5 / 0
Peak army$1,700Orders issued75
Decision turns (failed)43 (2)Mean latency5.0sModel cost$0.073

LOSS germany · east

GPT-6 Luna

openai/gpt-6-luna

Value destroyed$1,200Value lost$8,700
Units killed / lost6 / 11Buildings killed / lost0 / 5
Peak army$1,800Orders issued38
Decision turns (failed)43 (0)Mean latency3.0sModel cost$0.014

## Evaluation

passchecks **7/7** verdict computed from the gating checks

| Status | Kind | Check | Detail |
| --- | --- | --- | --- |
| pass | step | launch | Launch run-match as a detached process |
| pass | step | supervise | Supervise in the foreground until run-match exits |
| pass | step | render | Render the 1080p recording |
| pass | code\_check | outputs-exist | all present |
| pass | code\_check | game-has-winner | jev won: base destroyed |
| pass | code\_check | decisions-logged | turns per slot: {'Multi0': 43, 'Multi1': 43} |
| pass | code\_check | llm-turns-valid | failed/total per slot: {'Multi0': '1/43', 'Multi1': '0/43'} |
| pass | code\_check | video-decodes | duration 58.5s |
| pass | code\_check | video-complete | video ends at tick 8472 of 8472 |
| pass | code\_check | limits-respected | ended after 7.3 wall-minutes (budget 30.0 min): base destroyed |

## Decision timeline

What each model saw as its situation and what it ordered, every 8 game-seconds. Click a turn to jump the video there.

## Decision timeline

Every 8 game-seconds each model received a text briefing and replied with its reasoning and commands. Time is game time.

- **0:00 Jev Router**: Standard opening: deploy the MCV, start power, then refinery for income. Our start is far from the enemy (95,11 vs 12,16), so we have time to build up.
- **0:00 GPT-6 Luna**: Deploy the MCV immediately, then start the power plant opening. Once the Construction Yard is available, I’ll build a refinery and begin scouting toward the likely enemy start.
- **0:08 Jev Router**: (no valid response) (error: {"error": {"message": "Decision model timed out", "code": 504}})
- **0:08 GPT-6 Luna**: The Construction Yard is deployed and the Power Plant is underway. I’ll start the Refinery next so it can follow as soon as the plant is placed and ready.
- **0:16 Jev Router**: We start with a Construction Yard ready. Begin standard Allied opening: power plant first, then refinery for economy. No army yet, no enemy contact.
- **0:16 GPT-6 Luna**: The Construction Yard is deployed, but no power or economy is online yet. Start a Power Plant; once placed, begin the Ore Refinery.
- **0:24 Jev Router**: Power plant is complete and ready to place. Placing it now and immediately starting the Ore Refinery for income and our first harvester.
- **0:24 GPT-6 Luna**: Place the ready Power Plant, then start an Ore Refinery to establish income. The MCV is deployed at home and the likely enemy start is far to the northeast.
- **0:32 Jev Router**: Power plant completed. Now starting Ore Refinery for income and harvester.
- **0:32 GPT-6 Luna**: The Construction Yard and power plant are online, but I have no refinery or income yet. Start the refinery immediately; once it is placed, build a barracks and begin establishing a tank-focused economy.
- **0:40 Jev Router**: Opening is on track: powr + fact up, refinery building. Keep the building queue fed by queuing the barracks next so we can start infantry production.
- **0:40 GPT-6 Luna**: The refinery is already building and is the priority; there are no units or other useful production options yet. I’ll place it as soon as it’s ready, then start infantry production and expand into vehicles.
- **0:48 Jev Router**: Refinery is halfway done and barracks is queued right behind it. Sitting tight and saving cash until the refinery is ready to place.
- **0:48 GPT-6 Luna**: The Ore Refinery is already 47% complete, so let it finish; there are no units or other production queues available yet. Once it is ready, place it and start the barracks, then build a War Factory and expand power as needed.
- **0:56 Jev Router**: Opening is on track: power up, refinery nearly done. Queuing the War Factory now so it starts the moment the barracks finishes, and keeping cash ready to spend on tanks and a second refinery.
- **0:56 GPT-6 Luna**: The Ore Refinery is already 70% complete, so the Building queue is occupied. I’ll save cash for a Barracks and War Factory rather than spend it on early defenses.
- **1:04 Jev Router**: Economy opening in progress: proc almost done, tent queued. Cash is decent so push toward war factory. Place the refinery as soon as ready, keep the build queue busy, then get a war factory up for tanks.
- **1:04 GPT-6 Luna**: The first refinery is nearly complete, so I’ll place it as soon as it becomes ready and then establish infantry and vehicle production. There are no units or enemy contacts yet; the likely enemy start remains northeast at (95,11).
- **1:12 Jev Router**: We have a Construction Yard and power plant but no income yet. The refinery is ready to place, which gives us a free harvester and ore income. Place it, then keep the building queue busy with a barracks.
- **1:12 GPT-6 Luna**: The refinery is ready to place, so I’ll place it now and start barracks production to unlock an army. Power is ample; next I’ll add a War Factory and keep expanding ore income.
- **1:20 Jev Router**: Economy is stable with 1 refinery and $2980 in the bank. I need to clear the wasteful tent spam from the build queue and get a War Factory plus a second Refinery online. Power is fine for now.
- **1:20 GPT-6 Luna**: The refinery is placed and the barracks is already under construction; power is ample for now. Queue infantry as soon as the barracks is available, then prioritize a War Factory and begin tank production.
- **1:28 Jev Router**: Power plant is ready to place and cash is decent ($3000). I need to get economy and a barracks going while the war factory and second refinery progress. Nothing to fight yet, enemy is far west.
- **1:28 GPT-6 Luna**: Place the ready barracks, queue a War Factory, and start infantry production for scouting and early defense. Keep the harvester mining while the economy is still small.
- **1:36 Jev Router**: Buildings are progressing (tent, proc, weap all queued). Just let production continue and keep harvester mining while economy builds up.
- **1:36 GPT-6 Luna**: The War Factory is already under construction, and the barracks can now train infantry. I’ll queue a small infantry force and set it to rally toward the likely enemy start; once the War Factory is placed, I’ll prioritize another refinery and vehicle production.
- **1:44 Jev Router**: Early game: place barracks, get War Factory up for tanks, keep economy growing. Enemy is far west, so I have time to build up.
- **1:44 GPT-6 Luna**: The War Factory is underway and infantry production is queued, so I’ll line up a second Refinery and add anti-vehicle infantry. Send the small existing squad east to scout toward the likely enemy start while keeping the harvester mining.
- **1:52 Jev Router**: War factory is coming along; barracks is up so I can finally train infantry. Power is plentiful, so I'll pump out riflemen and a couple rocket soldiers and keep the building queue busy toward a second refinery.
- **1:52 GPT-6 Luna**: The War Factory is underway, with a Refinery queued behind it; power is sufficient for now. Keep rocket infantry coming and push the scouting squad east toward the likely enemy base.
- **2:00 Jev Router**: Economy ramping: weap at 32% and two procs queued. Cash is healthy at $2061, so keep infantry queues full and prep more power for the upcoming war factories. Enemy start is likely west at (12,16); mass units at a forward rally once we have 8+.
- **2:00 GPT-6 Luna**: The War Factory is still under construction, with a Refinery queued behind it; keep the scouts advancing toward the likely enemy start. Rocket Soldiers are already queued, so conserve cash for the refinery and tanks once the factory is placed.
- **2:08 Jev Router**: Economy is healthy and the war factory is nearly done. I'll scout west toward the likely enemy base while queues keep producing; no enemy contact yet.
- **2:08 GPT-6 Luna**: The War Factory is nearly ready, and the Refinery is queued behind it; power is ample for now. Keep the scattered scouts pushing toward the likely enemy start while the queued rocket soldiers finish.
- **2:16 Jev Router**: War Factory is nearly done (66%). Scouting infantry continues westward toward the suspected enemy base at (12, 16). After War Factory, the queued Ore Refinery will boost our income.
- **2:16 GPT-6 Luna**: The War Factory is nearly ready; place it now and let the queued Refinery follow. Cash is too low to start vehicle production, so keep the army advancing toward the likely enemy start while the existing infantry queue continues.
- **2:24 Jev Router**: War factory nearly done; I'll keep scouting west with my infantry squad and make sure the harvester is mining. Next turn I'll place the war factory and start vehicle production.
- **2:24 GPT-6 Luna**: Place the ready War Factory near the base and keep the scouting force advancing toward the likely enemy start. Cash is exhausted, so the queued Refinery and infantry production will resume as the harvester brings in ore.
- **2:32 Jev Router**: War factory nearly done, economy still thin ($318). Army of 7 healthy units should keep pushing west toward the enemy base at (12,16) while the damaged rocket soldier retreats home. Harvester keeps mining.
- **2:32 GPT-6 Luna**: Cash is depleted, so let the queued refinery finish while the harvester gathers ore. The scouting force has found an enemy rocket soldier; keep advancing east together toward the likely enemy base.
- **2:40 Jev Router**: I'm broke ($0) so I must get my harvester mining and place the ready War Factory to start tank production. Two enemy rifle scouts are near my base at (71,18) — my forward infantry should clear them, then continue scouting toward the enemy start (12,16).
- **2:40 GPT-6 Luna**: The refinery is still building and cash is empty, so I can’t start anything new this turn. Keep the combat force advancing toward the likely enemy base while the queued rocket soldiers finish.
- **2:48 Jev Router**: Cash is empty so production must wait on ore; keep the harvester mining and push my squad toward the enemy e3 and then the enemy base. Weapon factory is up, so once cash flows I'll add tanks.
- **2:48 GPT-6 Luna**: Cash is exhausted, so preserve the harvester and let the refinery and queued infantry finish. The rocket soldiers are spread out; regroup them into a push toward the enemy start and engage the spotted rifleman on the way.
- **2:56 Jev Router**: Cash is $0 but economy is ramping (harvester running). Army of 6 inf is idle near (75-92,15); enemy base is far west at (12,16). Push the army west while keeping production queued.
- **2:56 GPT-6 Luna**: The second refinery is 35% complete, but cash is exhausted, so I can’t start additional production yet. Keep the scattered rocket soldiers advancing toward the likely enemy start and send the harvester back to work.
- **3:04 Jev Router**: Cash is $0 with only one harvester, so economy is the bottleneck. Get the harvester mining, pull the badly damaged rifleman back, and keep the small group pressing west while production trickles in.
- **3:04 GPT-6 Luna**: The second refinery is already building, but cash is exhausted, so keep the harvester mining and let queued production finish. Send the two rocket soldiers east to engage the visible infantry and probe toward the likely enemy base.
- **3:12 Jev Router**: Economy is starved at $0 with only one harvester, so priority is income and keeping queues alive. My western infantry group should keep pushing toward the enemy base while I get ore flowing.
- **3:12 GPT-6 Luna**: The second refinery is already building, but cash is empty and the lone rocket soldier is exposed far from base. Keep the harvester mining and cautiously scout toward the likely enemy start while the queued infantry finishes.
- **3:20 Jev Router**: Economy is the bottleneck (cash $0, 1 harvester). I have weap+tent up and power is fine, so I'll add a second refinery and keep harvesting income flowing while my western infantry pushes toward the enemy start.
- **3:20 GPT-6 Luna**: The second refinery is already underway, but cash is empty, so there’s little to start until ore comes in. Keep infantry production moving and send the two rocket soldiers toward the likely enemy start to scout and pressure it.
- **3:28 Jev Router**: Cancelling unnecessary power plant to free queue and funds for Ore Refinery. Advancing forward scout infantry towards enemy base at (12,16).
- **3:28 GPT-6 Luna**: The second refinery is already building, but cash is exhausted and the base has only one harvester, so prioritize getting that income online. Keep infantry production queued and send the available rocket soldier to scout toward the likely enemy start.
- **3:36 Jev Router**: Economy is very tight ($0 cash, 1 harvester) but 3 harvesters are queued in the War Factory, so I'll keep those. I'll cancel the barely-started 2nd proc and start a Service Depot to unlock Medium Tanks. Keep the infantry push rolling toward the enemy start at ~(12,16), and pull the 30% Rifle Infantry back to base.
- **3:36 GPT-6 Luna**: The second refinery is already underway, but cash is exhausted, so prioritize getting it placed and harvesting income. The damaged rocket soldier is near an enemy rifleman; engage it while continuing to scout cautiously toward the likely enemy base.
- **3:44 Jev Router**: Cash is $0 so all queues are stalled on economy; three harvesters are already queued in the Vehicle queue, so the plan is to keep mining and keep pressure on the enemy base at (12,16). I'll push my 8 field infantry west and rally new infantry from the barracks toward the front.
- **3:44 GPT-6 Luna**: Cash is exhausted, so keep the harvester mining while the refinery and queued units finish. Once the second refinery is ready, place it and use the added income to sustain tank production and expand toward the enemy start.
- **3:52 Jev Router**: Cash is $0 with only one harvester, so economy is the bottleneck; production queues are already busy. Field group of 8 infantry is deep in enemy territory near (19-29,18) with no visible enemy contact. Keep the push going toward enemy base (12,16), keep the low-hp rifleman out of the fight, and make sure the harvester is mining.
- **3:52 GPT-6 Luna**: The second refinery is already 64% complete, but cash is empty and I have no combat units available to respond to the nearby enemy infantry. Keep the harvester mining and direct newly produced units toward the likely enemy base.
- **4:00 Jev Router**: Cash is empty so production is stalled; my only income is harvester #131 which needs to be mining. The field group (6 units) is near the enemy base at (12,16) — push it in to pressure while I get economy back.
- **4:00 GPT-6 Luna**: Enemy infantry are dangerously close to the refinery and lone harvester, while there are no combat units available yet. Pull the harvester toward the base and let the queued rocket soldier and tanks finish; keep their rally points directed toward the enemy.
- **4:08 Jev Router**: Lead infantry force has reached (19, 18), right outside enemy base (12, 16). Ordering attack_move directly into (12, 16) to find and destroy enemy buildings while reinforcements catch up.
- **4:08 GPT-6 Luna**: The refinery is nearly complete, but enemy infantry are close to the base and the harvester should stay clear of them. Keep the existing tank and rocket-soldier production moving, then rally new units toward the enemy start once there is a force to send.
- **4:16 Jev Router**: Cash is at $0, so everything depends on harvester #131 dumping ore. Our strike group is already near the enemy start (12,16) but sees nothing, so we push in to find and destroy. Keep infantry producing and advance.
- **4:16 GPT-6 Luna**: Enemy infantry are close to my base, while I currently have no combat units on the field. Keep the harvester mining away from them and let the queued tanks and rocket soldier finish; the refinery is nearly complete.
- **4:24 Jev Router**: Economy is starved ($0 cash, 1 harvester) so harvester production is critical. I have 6 units near the enemy start and enemy only shows 2 buildings left, so press the attack while queuing reinforcements and more economy.
- **4:24 GPT-6 Luna**: The enemy infantry is dangerously close, but I have no combat units available and no cash to fund new orders. Keep the harvester mining so the refinery construction and queued defenses can resume as soon as income arrives.
- **4:32 Jev Router**: Cash is drained ($0) so production is stalled, but the main 7-unit group is already at the enemy base hitting the fact and weap. Focus on finishing the attack: keep the group on the enemy buildings and pull the stragglers in to reinforce.
- **4:32 GPT-6 Luna**: Cash is exhausted and the nearby enemy infantry mass threatens the only harvester, so keep it mining while the refinery finishes and income resumes. No combat units are available yet; avoid exposing the harvester to the enemy group.
- **4:40 Jev Router**: Cash is zero with only 1 harvester, so I must keep pressure low-cost while income catches up. Main group is already at the enemy base — concentrate on finishing the War Factory (#151, 45%) and Construction Yard (#122). Keep production queues running.
- **4:40 GPT-6 Luna**: Enemy infantry is massed just east of the base, while I have no combat units and no cash. Keep the harvester mining and continue queuing rocket soldiers to counter their infantry and any vehicles; existing vehicle production should resume when funds arrive.
- **4:48 Jev Router**: Army is at the enemy base hitting the war factory (18%) and construction yard. Cash is $0 so production is stalled - need income badly. Keep the attack going and get the harvester mining.
- **4:48 GPT-6 Luna**: Cash is exhausted and the refinery is still under construction, so there’s little we can add right now. Keep the lone harvester mining and let the queued refinery and units progress; the enemy infantry are threatening the base.
- **4:56 Jev Router**: Army is next to the enemy Construction Yard (#122 at 87%) — press the attack to finish it and win. Cash is $0 so all production is stalled until the harvester brings ore in; keep it mining. Pull the 30% Rifle Infantry back home.
- **4:56 GPT-6 Luna**: The Refinery is already 64% complete, but cash is empty and the enemy infantry is threatening the base. Keep the harvester mining and rally the Barracks toward the threat; the queued Rocket Soldiers should provide the best available defense once income resumes.
- **5:04 Jev Router**: Army is hammering the enemy Construction Yard (#122 at 60%) - if I finish it the game is basically won. Cash is $0 with a bloated queue, so I must keep the harvester mining and not add new spending. Retreat the weak rifleman and set rally points. (error: {"error": {"message": "Decision model timed out", "code": 504}})
- **5:04 GPT-6 Luna**: Cash is depleted and I have no combat units, so avoid starting anything that would compete with the nearly finished Refinery. Keep the Ore Truck mining and rally any queued Rocket Soldiers to defend the base against the infantry cluster.
- **5:12 Jev Router**: Enemy Construction Yard #122 is down to 31% and my 8-unit group is on it — finish it. Economy is broke ($0), so keep the lone harvester mining and let the near-complete harvester finish. Avoid queuing more until cash recovers.
- **5:12 GPT-6 Luna**: The enemy infantry is already clustered beside my base, and I have no combat units or cash to respond immediately. Keep the harvester mining so the refinery can finish and income can recover; let the queued rocket soldiers provide the first defense.
- **5:20 Jev Router**: No enemies visible near our forward group at (17,16) — the enemy position at (12,16) seems cleared or they've relocated. Economy is stalled at $0, so let the harvester finish and keep the refinery building. Push the army forward to locate and destroy remaining enemy buildings.
- **5:20 GPT-6 Luna**: The base is in a critical state: there is no visible Construction Yard or refinery, no cash, and the nearby enemy infantry has no friendly combat units to stop it. Send the harvester back to mining and cancel the unaffordable rocket-soldier backlog so the barracks can prioritize cheap rifle infantry when funds become available.
- **5:28 Jev Router**: My 9-unit group is next to the enemy base at (12,16). Cash is $0 so no new builds; focus on destroying the enemy tent and power plant to cripple them. Keep harvester mining and continue queued production.
- **5:28 GPT-6 Luna**: The Construction Yard and Refinery are gone, so there’s no way to rebuild or restore income right now. Send the surviving harvester to mine and keep the Barracks to preserve the only remaining production option.
- **5:36 Jev Router**: Economy is stalled at $0 cash with only one harvester, so new production won't progress until ore comes in. My main army is already at the enemy base — I'll finish off the last visible enemy power plant and keep the queues running. The lone rifle at 30% hp should stay home rather than die.
- **5:36 GPT-6 Luna**: The Construction Yard and Refinery are gone, leaving no way to restart production; the lone harvester should keep mining if possible. Avoid sending it into the enemy infantry clustered beside the base.

---
Source: https://evaljetty.com/openra/runs/r2-rr-jev-gpt6luna-g1.html · Evals by Jetty · Run your own evals: https://jetty.io/?utm_source=evaljetty&utm_medium=llms