---
title: "GPT-5.6 Terra vs OpenRA AI (Medium) | OpenRA arena | Evals by Jetty"
url: https://evaljetty.com/openra/games/ladder-gpt56terra-medium-g1.html
description: "OpenRA AI (Medium) destroyed the enemy base. Watch the full game with both models' reasoning."
updated: 2026-09-28
publisher: Jetty (https://jetty.io)
---

Champion vs OpenRA AI · ladder-gpt56terra-medium-g1

# GPT-5.6 Terra vs OpenRA AI (Medium)

OpenRA AI (Medium) destroyed the enemy base after 10.8 game-minutes · 14.6 min wall clock

[Jetty trajectory](https://jetty.io/jettygrowthteam/openra-arena-match/cb9f4fa0)
[Replay (.orarep)](https://evaljetty.com/openra/media/ladder-gpt56terra-medium-g1.orarep)
[Decision log](https://evaljetty.com/openra/runs/ladder-gpt56terra-medium-g1/decisions.jsonl)
[Runtime config](https://evaljetty.com/openra/runs/ladder-gpt56terra-medium-g1/runtime_config.json)

LOSS ukraine · west

GPT-5.6 Terra

openai/gpt-5.6-terra

Value destroyed$7,200Value lost$33,000
Units killed / lost14 / 98Buildings killed / lost2 / 12
Peak army$3,000Orders issued127
Decision turns (failed)81 (0)Mean latency4.0sModel cost$0.642

WIN germany · east

OpenRA AI (Medium)

openra/medium-ai

Value destroyed$33,000Value lost$7,200
Units killed / lost98 / 14Buildings killed / lost12 / 2
Peak army$0Orders issued152
Decision turns (failed)0 (0)Mean latency–Model cost$0.000

## 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 GPT-5.6 Terra**: Deploy immediately and begin the standard Soviet economic opening toward two refineries and a war factory.
- **0:08 GPT-5.6 Terra**: Construction Yard is deployed and the first Power Plant is underway. I will place it as soon as ready, then immediately establish ore income with a Refinery.
- **0:16 GPT-5.6 Terra**: Construction Yard is deployed and we need establish power and ore income immediately. Start the first Power Plant, then place it and begin an Ore Refinery next turn.
- **0:24 GPT-5.6 Terra**: Deploying the first power plant and immediately starting an ore refinery to establish income.
- **0:32 GPT-5.6 Terra**: Power is established and cash is ample. Start the first refinery immediately to begin income, then place it and proceed into barracks and expansion next turn.
- **0:40 GPT-5.6 Terra**: The first refinery is still under construction. I will place it as soon as it completes, then immediately establish infantry production and expand ore income.
- **0:48 GPT-5.6 Terra**: First refinery is still under construction; maintain the opening by placing it immediately when ready, then add infantry production and a second income source.
- **0:56 GPT-5.6 Terra**: First refinery is nearly ready and will establish income with its free harvester. I will place it immediately when available, then start barracks for scouting infantry.
- **1:04 GPT-5.6 Terra**: First refinery is nearly complete. I will place it as soon as it is ready, then immediately establish infantry production and expand ore income.
- **1:12 GPT-5.6 Terra**: Place the first refinery immediately to start income, then begin barracks production for early map control. Base power is ample for this opening.
- **1:20 GPT-5.6 Terra**: Barracks is nearly complete; keep the existing harvester mining and immediately expand to a second refinery once the barracks is placed. Then establish infantry production while saving for a War Factory.
- **1:28 GPT-5.6 Terra**: Barracks is ready and the economy needs a second refinery immediately. Place it, start the second refinery, and begin infantry production as soon as the barracks is online.
- **1:36 GPT-5.6 Terra**: Second refinery is underway and power is ample. I will produce a small scouting force while preserving funds for a War Factory immediately after the refinery completes.
- **1:44 GPT-5.6 Terra**: Second Refinery is underway; use infantry to scout toward the likely eastern enemy base while maintaining rifle production. Save income for a War Factory immediately after the refinery completes.
- **1:52 GPT-5.6 Terra**: Second refinery is nearly complete and will strengthen income; then transition directly into a War Factory. Rifle squad will continue scouting aggressively toward the likely Allied base while production stays active.
- **2:00 GPT-5.6 Terra**: Second refinery is almost complete, so I will place it immediately next turn and transition into a War Factory. Rifle scouts continue toward the likely enemy base while rocket troops finish training.
- **2:08 GPT-5.6 Terra**: Second refinery is ready and should be placed immediately to expand income. Infantry continue scouting east toward the likely Allied start while we save for a War Factory.
- **2:16 GPT-5.6 Terra**: Two refineries are online and infantry scouting is advancing toward the likely enemy position. I need another power plant before a War Factory, while keeping the barracks producing anti-tank support.
- **2:24 GPT-5.6 Terra**: Second power plant is ready and should be placed to support the coming War Factory. Infantry production is already fully queued while the scout column advances east toward the likely enemy start.
- **2:32 GPT-5.6 Terra**: Infantry scouts are nearing the likely enemy approach while our two refineries provide steady income. Save for the War Factory immediately, keep scouting east, and consolidate trailing infantry toward the front.
- **2:40 GPT-5.6 Terra**: Our two-refinery economy is building toward the War Factory while infantry scouting has reached the central-east approach without contact. Keep the whole force advancing toward the likely enemy start and preserve funds for armor production.
- **2:48 GPT-5.6 Terra**: Forward infantry have reached the enemy ore field and can pressure the exposed harvester while rockets close in against the tank. Keep barracks production active while saving income toward a War Factory.
- **2:56 GPT-5.6 Terra**: Our forward infantry have reached the enemy ore field and exposed War Factory. Focus rockets on the enemy tank, destroy the War Factory with the nearby rifles, and keep infantry production running while income accumulates for our own War Factory.
- **3:04 GPT-5.6 Terra**: Our infantry spearhead has reached the enemy War Factory, while their visible tank is vulnerable to concentrated rockets. Keep pressure on the factory and tank, reinforce the forward group, and save income for a War Factory of our own.
- **3:12 GPT-5.6 Terra**: We have enough stored resources to begin reinforcing with rocket soldiers while our rifle screen presses the exposed enemy units near their likely base. Keep the main column advancing east and pull the badly damaged forward rifle back.
- **3:20 GPT-5.6 Terra**: Our infantry column is crossing mid-map toward the likely enemy start, while cash is being saved for a War Factory. Keep the advance cohesive and bring the rear rocket soldier forward.
- **3:28 GPT-5.6 Terra**: Our infantry column is nearing the enemy approach but has taken losses, so it should eliminate the damaged jeep and continue scouting toward the likely base. Spend available cash on replacement rifles while ore income builds toward a War Factory.
- **3:36 GPT-5.6 Terra**: Our infantry spearhead is advancing toward the likely northeast enemy start, while the base has ample power and two active refineries. Preserve cash for a third refinery as soon as funds reach $1400, reinforce the push with the queued rifles, and eliminate the exposed rocket soldier.
- **3:44 GPT-5.6 Terra**: Our infantry spearhead is nearing the likely enemy approach, but we need more income and armor production. Continue scouting aggressively toward the suspected enemy base while spending available cash on infantry.
- **3:52 GPT-5.6 Terra**: Our infantry spearhead has reached the enemy approach and spotted a gun turret at 85,12. I will keep pressure toward the likely base while expanding ore income for a War Factory follow-up.
- **4:00 GPT-5.6 Terra**: Third refinery is progressing and our attack force is nearing the enemy start, where two light tanks are screening the approach. Keep infantry production active, focus the visible tanks, and pull the critically damaged rifleman back.
- **4:08 GPT-5.6 Terra**: Third refinery is nearing completion and our infantry screen has reached the enemy approach. Focus rockets and nearby infantry on the exposed light tanks while continuing rifle production, then push northeast toward the likely enemy base.
- **4:16 GPT-5.6 Terra**: Third refinery is nearing completion while our forward infantry and rockets have enemy light tanks engaged near the likely enemy entrance. Focus fire the tanks, keep new infantry flowing, and press the surviving eastern force toward the enemy start.
- **4:24 GPT-5.6 Terra**: Third refinery is nearly complete and will strengthen our economy. Our infantry column has reached the enemy approach; press east and eliminate the damaged visible tank while production continues.
- **4:32 GPT-5.6 Terra**: Our third refinery is ready and should be placed immediately to strengthen income. The infantry column has reached the enemy approach; focus the nearby troops on the exposed gun while the trailing force continues toward the likely base.
- **4:40 GPT-5.6 Terra**: Our infantry has reached the enemy’s exposed MCV and damaged gun emplacement. Focus-fire the gun and MCV while the trailing column continues advancing; keep infantry production running.
- **4:48 GPT-5.6 Terra**: The enemy MCV is exposed at 73,21 and must be destroyed before it can deploy. Our forward infantry and rocket soldier will converge on it while the trailing column continues east to secure the area.
- **4:56 GPT-5.6 Terra**: The enemy Construction Yard is exposed and damaged at 72,22; concentrate the forward infantry on it immediately while rockets and reinforcements advance. Keep the barracks rally aimed at the enemy base to sustain pressure.
- **5:04 GPT-5.6 Terra**: The enemy Construction Yard is exposed and damaged at 72,22; all available combat troops should converge to finish it immediately. Keep spending ore income toward a War Factory while the barracks continues producing rifles.
- **5:12 GPT-5.6 Terra**: The enemy Construction Yard is exposed and already below half health; all available combat units should focus it for a potential immediate win. War Factory is progressing, while infantry production continues as funds arrive.
- **5:20 GPT-5.6 Terra**: War Factory is nearly complete while our scattered attack force has temporarily lost vision of the enemy base. Keep the army advancing toward the last known Construction Yard area, deploy the factory immediately when ready, and maintain infantry pressure while ore converts to cash.
- **5:28 GPT-5.6 Terra**: War Factory is nearing completion while our infantry and rockets have reached the enemy approach. Keep pressure on the revealed enemy squad and rally all new infantry directly toward the suspected enemy base.
- **5:36 GPT-5.6 Terra**: Our infantry spearhead is nearing the enemy approach and visible enemy scouts are directly ahead. Keep pressure toward the last-known enemy base while the War Factory completes; spend the next income immediately on vehicles.
- **5:44 GPT-5.6 Terra**: War Factory is nearly ready while our forward infantry has reached enemy contact near the center-east. Finish the visible enemy squad and keep pressure toward the last known enemy base area.
- **5:52 GPT-5.6 Terra**: War Factory is nearly ready and must be placed as soon as it completes to transition into tank production. Our small forward force should continue probing toward the last known enemy base while harvesters replenish funds.
- **6:00 GPT-5.6 Terra**: War Factory is about to complete; place it as soon as it is ready and begin vehicle production. Push the forward infantry/rockets toward the suspected enemy position while keeping base troops moving up.
- **6:08 GPT-5.6 Terra**: War Factory is ready and must be placed immediately to begin armored production. Our forward infantry should continue probing east toward the suspected enemy position while income from three refineries converts stored ore to cash.
- **6:16 GPT-5.6 Terra**: The enemy MCV is exposed in the central-east, so the forward force should focus it immediately while I unlock heavy tank production. I will build a Service Depot and rally future vehicles toward the fight.
- **6:24 GPT-5.6 Terra**: The enemy MCV is exposed near the center-east and must be destroyed before it can establish a new base. Keep all combat units focused on it while the Service Depot completes for heavy tank production.
- **6:32 GPT-5.6 Terra**: Service Depot is nearing completion; preserve our economy while scouting the known enemy MCV area. Send the remaining infantry toward the enemy position and keep infantry production cycling as funds arrive.
- **6:40 GPT-5.6 Terra**: Service Depot is nearly complete, after which heavy tanks are the priority. Our small forward infantry/rocket group should continue probing the enemy MCV's last known area while harvesters maintain income.
- **6:48 GPT-5.6 Terra**: Service Depot is ready and unlocks Heavy Tanks; immediately place it and queue armor. Our forward scouts should converge on the last known enemy MCV area while remaining infantry reinforce from base.
- **6:56 GPT-5.6 Terra**: Service Depot is ready and will unlock heavy tanks; our small infantry force should keep probing northeast toward the likely enemy base while harvesters fund production.
- **7:04 GPT-5.6 Terra**: Our economy has three refineries and a Service Depot but the army is nearly gone. Keep infantry flowing, add power for upcoming production, and send the forward squad aggressively toward the likely northeast enemy base.
- **7:12 GPT-5.6 Terra**: Place the completed power plant to support expansion. Our forward infantry should continue scouting aggressively toward the likely enemy start while production remains queued and harvesters fund tanks.
- **7:20 GPT-5.6 Terra**: Three refineries and strong power are established, but the army is only a scouting infantry force while income accumulates for armor. Push the infantry northeast toward the likely enemy start and rally future vehicle production forward.
- **7:28 GPT-5.6 Terra**: Our infantry scout has reached the enemy perimeter and spotted a gun turret at (69,19), while ore trucks are sustaining income. Keep pressure moving northeast toward the likely base and use the existing production queues to rebuild mass before committing vehicles.
- **7:36 GPT-5.6 Terra**: Three refineries are sustaining income and the service depot permits heavy tanks. Keep infantry pressure advancing toward the known gun and northeast enemy start while using the idle war factory for a heavy-tank stream and adding a second factory when funds arrive.
- **7:44 GPT-5.6 Terra**: Our second War Factory is still constructing and three Heavy Tanks are queued, while the current infantry spearhead has reached the enemy AA gun area. Keep pressure toward the northeast enemy base and ensure all harvesters remain mining.
- **7:52 GPT-5.6 Terra**: Second War Factory is under construction and three Heavy Tanks are queued, so keep pressure toward the northeast while the economy converts ore. Rally both vehicle production paths forward and add cheap infantry when funds arrive.
- **8:00 GPT-5.6 Terra**: War Factory construction and all production queues are active, but the visible combat force is nearly gone. Keep the two forward riflemen scouting toward the expected enemy base while income completes the queued armor.
- **8:08 GPT-5.6 Terra**: Our economy has three refineries and production is nearly completing a heavy tank and rocket soldier, but the field army has been largely wiped out. Keep both queues saturated, send the surviving scout toward the likely enemy base, and add another refinery as income permits.
- **8:16 GPT-5.6 Terra**: Second War Factory and new heavy tanks are nearing completion, while the current army is too small for a base assault. Scout east cautiously with the existing tank and rifleman while the rocket soldier stays near the refineries.
- **8:24 GPT-5.6 Terra**: Second War Factory is nearly ready and the existing queues will consume incoming ore. Scout northeast with the heavy tank while rockets maintain a defensive screen around the ore fields.
- **8:32 GPT-5.6 Terra**: Our forward tank and rockets can clear the exposed enemy defenses while production finishes. Cash is empty, so preserve units and use rallies to form the next armored group toward the northeast.
- **8:40 GPT-5.6 Terra**: Our forward tank is critically damaged and must fall back to the Service Depot. Rockets and infantry will finish the exposed enemy gun emplacement while production continues toward a heavier armored force.
- **8:48 GPT-5.6 Terra**: War Factory and first Heavy Tank are nearing completion while the economy has three active harvesters and ample power. I will keep the small surviving force scouting east cautiously and rally new armor toward the northeast approach.
- **8:56 GPT-5.6 Terra**: War Factory is nearly complete and the heavy tank queue is progressing, while our economy has three refineries and harvesters. Keep scouting northeast with the infantry screen and immediately place the War Factory when it completes.
- **9:04 GPT-5.6 Terra**: Our economy is fully committed with three harvesters and both a War Factory expansion and heavy tank nearing completion. Send the surviving scouts northeast toward the likely enemy start while keeping production rallied forward.
- **9:12 GPT-5.6 Terra**: A second War Factory is ready and should be placed immediately to expand heavy-tank production. Our combat force is currently off-screen or depleted, so rebuild armor continuously and keep the factories rallied toward the enemy approach.
- **9:20 GPT-5.6 Terra**: Two War Factories are online and the economy has ore available, so I will keep heavy tank production and add infantry support while scouting northeast. Power headroom is sufficient but another plant supports upcoming tech and production.
- **9:28 GPT-5.6 Terra**: Power is ready and must be placed to preserve production capacity. Our lone heavy tank should clear the nearby jeep threatening the ore field while queued armor and infantry build up.
- **9:36 GPT-5.6 Terra**: Three production queues are committed to heavy tanks while infantry reinforcements are queued. Clear the jeeps threatening the ore field, place the available power plant, and rally new forces toward the northeast attack route.
- **9:44 GPT-5.6 Terra**: A large Allied force is overrunning the ore field while our heavy tank is critically damaged. Preserve surviving units at the Service Depot and keep the harvester mining while the queued tanks complete.
- **9:52 GPT-5.6 Terra**: Enemy medium tanks are pressuring our refineries, while our heavy tanks are nearly complete. Rally all production into a defensive point near the Construction Yard and use the surviving rifles to screen the exposed ore facilities.
- **10:00 GPT-5.6 Terra**: Our base is under immediate pressure from a large Allied mixed force, but three heavy tanks are already queued and near completion. Keep the surviving rifle engaging nearby infantry while newly completed armor rallies into the defense point east of the base.
- **10:08 GPT-5.6 Terra**: Our base is under immediate attack and all available funds are committed to nearly finished tank and infantry production. Keep all production rallied into the enemy concentration and have every completed combat unit engage locally; preserve the damaged refinery if funds arrive.
- **10:16 GPT-5.6 Terra**: Enemy forces are on our doorstep while our first heavy tank and infantry are still producing. Send all emerging combat units into the enemy cluster immediately and repair key damaged infrastructure.
- **10:24 GPT-5.6 Terra**: Our base is under immediate attack with no fielded units or income. Preserve the nearly completed Heavy Tank and use any units that emerge to engage the enemy force directly at the construction yard.
- **10:32 GPT-5.6 Terra**: Our base is under immediate enemy pressure and has no economy, but three Heavy Tanks are queued. Rally the War Factory directly into the enemy concentration so completed tanks engage at once.
- **10:40 GPT-5.6 Terra**: Our base is effectively destroyed and under immediate attack, with no income or combat units. Queue an APC as soon as funds become available and repair the surviving War Factory if possible.

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Source: https://evaljetty.com/openra/games/ladder-gpt56terra-medium-g1.html · Evals by Jetty · Run your own evals: https://jetty.io/?utm_source=evaljetty&utm_medium=llms