---
title: "OpenRA AI (Medium) vs GPT-5.6 Terra | OpenRA arena | Evals by Jetty"
url: https://evaljetty.com/openra/games/ladder-gpt56terra-medium-g2.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-g2

# OpenRA AI (Medium) vs GPT-5.6 Terra

OpenRA AI (Medium) destroyed the enemy base after 5.8 game-minutes · 8.1 min wall clock

[Jetty trajectory](https://jetty.io/jettygrowthteam/openra-arena-match/25bbbda1)
[Replay (.orarep)](https://evaljetty.com/openra/media/ladder-gpt56terra-medium-g2.orarep)
[Decision log](https://evaljetty.com/openra/runs/ladder-gpt56terra-medium-g2/decisions.jsonl)
[Runtime config](https://evaljetty.com/openra/runs/ladder-gpt56terra-medium-g2/runtime_config.json)

WIN england · west

OpenRA AI (Medium)

openra/medium-ai

Value destroyed$12,000Value lost$300
Units killed / lost23 / 3Buildings killed / lost6 / 0
Peak army$0Orders issued62
Decision turns (failed)0 (0)Mean latency–Model cost$0.000

LOSS ukraine · east

GPT-5.6 Terra

openai/gpt-5.6-terra

Value destroyed$300Value lost$12,000
Units killed / lost3 / 23Buildings killed / lost0 / 6
Peak army$2,200Orders issued51
Decision turns (failed)44 (0)Mean latency3.1sModel cost$0.299

## 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 economy opening with power, then refineries and infantry access.
- **0:08 GPT-5.6 Terra**: Construction Yard is deployed and the opening power plant should be ready or nearly ready. Place it immediately, then start the first refinery to establish income.
- **0:16 GPT-5.6 Terra**: Construction Yard is deployed and we need power to unlock the economy. Start the first power plant immediately, then place it next turn and proceed into refinery production.
- **0:24 GPT-5.6 Terra**: Construction Yard is deployed and the first power plant is ready. Place it immediately and begin the first refinery to establish income.
- **0:32 GPT-5.6 Terra**: Power is established and cash is sufficient to begin the core economy. I will start the first refinery immediately, then place it and follow with barracks production next turn.
- **0:40 GPT-5.6 Terra**: The first refinery is still under construction. I will place it as soon as it is ready, then immediately establish infantry production and expand ore income.
- **0:48 GPT-5.6 Terra**: First refinery is still constructing. I will place it as soon as ready, then establish barracks and expand income toward a war factory.
- **0:56 GPT-5.6 Terra**: First refinery is nearly complete; place it immediately and transition into infantry production while establishing income.
- **1:04 GPT-5.6 Terra**: First refinery is nearly complete; place it immediately to begin income, then establish barracks and infantry while expanding toward a war factory.
- **1:12 GPT-5.6 Terra**: The first refinery is ready and must be placed immediately to start income. Barracks construction is underway; once it completes, begin infantry while advancing toward a war factory and a second refinery.
- **1:20 GPT-5.6 Terra**: Barracks is nearly complete, with an unnecessary second barracks queued behind it. Cancel the duplicate and queue a War Factory, while keeping the ore truck actively mining.
- **1:28 GPT-5.6 Terra**: Barracks is ready and War Factory is under construction. Place the barracks, begin a mixed infantry force for scouting, and set its rally east toward the enemy’s likely position.
- **1:36 GPT-5.6 Terra**: War Factory is nearing completion; begin infantry production and send scouts east while preserving cash for a second refinery immediately after factory placement.
- **1:44 GPT-5.6 Terra**: War Factory is progressing and infantry production is fully queued. Scout toward the likely enemy base while preserving the harvester and prepare to place the factory immediately for tank production.
- **1:52 GPT-5.6 Terra**: War Factory is still constructing, so preserve cash for its placement and the second refinery immediately afterward. Continue scouting east toward the enemy start while infantry production completes.
- **2:00 GPT-5.6 Terra**: War Factory is nearly ready; place it immediately when available and add power for the upcoming second refinery. Continue scouting toward the likely enemy base while building a mixed infantry screen.
- **2:08 GPT-5.6 Terra**: War Factory is nearly complete and the infantry queue is filled. Consolidate the nearby infantry into an eastward scouting force while the distant scout continues toward the likely enemy base; keep the harvester mining.
- **2:16 GPT-5.6 Terra**: War Factory is about to complete and the infantry screen is advancing eastward. I will place it immediately, keep the barracks producing, and continue scouting toward the likely enemy base while saving income for the second refinery.
- **2:24 GPT-5.6 Terra**: War Factory is ready and must be placed to unlock vehicle production; power is already queued behind it. Infantry are advancing toward the likely enemy start, so keep them grouped and moving northeast while income accumulates for a second refinery.
- **2:32 GPT-5.6 Terra**: War Factory is online and our infantry screen is advancing east, but cash is currently exhausted. Finish the queued power plant, then immediately expand with a second refinery and begin vehicle production as income returns.
- **2:40 GPT-5.6 Terra**: The power plant is nearly complete; place it immediately and begin a second refinery to sustain War Factory production. Our infantry screen is already advancing toward the likely enemy start, so keep it moving as a unified attack force.
- **2:48 GPT-5.6 Terra**: Our first refinery, barracks, and war factory are established, with a second refinery under construction but no cash yet. Infantry are pushing toward the likely enemy start; keep them advancing while ore income completes queued troops and the refinery.
- **2:56 GPT-5.6 Terra**: The second refinery is underway and our forward infantry screen is approaching the likely enemy start without contact. Keep the harvester mining and concentrate the army toward the northeast while queues remain funded by incoming ore.
- **3:04 GPT-5.6 Terra**: Second refinery is nearly complete but cash is exhausted. Keep the scattered infantry advancing toward the likely enemy start while the harvester mines and production resumes as ore arrives.
- **3:12 GPT-5.6 Terra**: The refinery is nearly complete and will restore income for the tank tech path. Keep the forward infantry pressure moving toward the likely enemy start while the trailing rocket catches up.
- **3:20 GPT-5.6 Terra**: The second refinery is nearly complete, which will restore our income and enable the Service Depot/heavy tank transition. Our surviving forward infantry should continue scouting and pressuring the likely enemy start while the rocket catches up.
- **3:28 GPT-5.6 Terra**: Second refinery is underway and power is ample. Scout aggressively toward the likely eastern enemy base while the harvester keeps income flowing; place the refinery immediately when ready and transition into a Service Depot for heavy tanks.
- **3:36 GPT-5.6 Terra**: Second refinery is under construction while the economy is temporarily empty. Keep scouting the likely enemy start and consolidate the nearby infantry toward the eastern approach.
- **3:44 GPT-5.6 Terra**: Second refinery is nearing completion and must be placed immediately for income. Our small infantry scout force should continue probing east while the harvester mines continuously.
- **3:52 GPT-5.6 Terra**: Second refinery is still building; keep the lone harvester mining and push the infantry/rocket scout east toward the likely enemy base. Once refinery income arrives, place it and transition into Service Depot for heavy tank production.
- **4:00 GPT-5.6 Terra**: Second refinery is still constructing and cash is temporarily exhausted. Keep the scout advancing toward the suspected northeast enemy start while the harvester mines to fund the next infrastructure steps.
- **4:08 GPT-5.6 Terra**: Second refinery is still building and cash is exhausted, so maintain scouting pressure while the harvester mines. Place the refinery immediately when ready, then transition into a Service Depot and heavy-tank production.
- **4:16 GPT-5.6 Terra**: Second refinery is nearly complete, which will strengthen the weak economy. Keep the harvester mining and rally future production toward the enemy approach while waiting for funds.
- **4:24 GPT-5.6 Terra**: Second refinery is nearly ready and will be placed as soon as funds allow its completion. Current army is minimal, so the riflemen will scout toward the likely northeast enemy base while the harvester continues mining.
- **4:32 GPT-5.6 Terra**: Second refinery is nearly ready and will be placed as soon as possible to accelerate the economy. Our two scouts will continue northeast toward the enemy start while the current harvester mines continuously.
- **4:40 GPT-5.6 Terra**: Second refinery is nearly complete, and rebuilding infantry is underway after heavy losses. Keep the lone harvester mining and queue a larger infantry screen while saving toward a Service Depot and heavy armor.
- **4:48 GPT-5.6 Terra**: Second refinery is ready and must be placed immediately to restore income and add a harvester. Existing riflemen will scout northeast toward the likely enemy base while infantry production continues.
- **4:56 GPT-5.6 Terra**: Second refinery is online, but the army was wiped and cash is currently empty. Keep the lone scout moving toward the likely northeast enemy base while refinery income clears the existing infantry queue.
- **5:04 GPT-5.6 Terra**: Enemy infantry are at our eastern edge while our army has been wiped, so immediate power restoration and emergency infantry are essential. Keep both harvesters mining and begin rebuilding toward a Service Depot and heavy tanks.
- **5:12 GPT-5.6 Terra**: Enemy infantry is massed directly east of the base while the refinery is critically damaged. Finish and place power, repair the refinery, establish a barracks, and use available vehicles/harvesters to disrupt the nearby infantry while rebuilding defenses.
- **5:20 GPT-5.6 Terra**: Enemy infantry and jeep are inside the base while we have no combat force. Place the ready power plant, keep the damaged harvester mining, and let queued flak units emerge to defend the refinery and factory.
- **5:28 GPT-5.6 Terra**: Enemy infantry and a jeep are overrunning the base while our first flak tracks finish. Keep the War Factory rally directly in the threatened core and use each completed vehicle to clear the nearby infantry; repairs remain critical.
- **5:36 GPT-5.6 Terra**: Our base is under immediate infantry pressure and cash is exhausted, but two Mobile Flak Tracks are in production. Keep the factory rally inside the base so completed vehicles can clear the nearby enemy blob.
- **5:44 GPT-5.6 Terra**: Our Construction Yard and production are gone, with only badly damaged refinery/power remaining and no functional army. Sell the exposed buildings before the enemy gets destruction value; preserve whatever asset value remains.

---
Source: https://evaljetty.com/openra/games/ladder-gpt56terra-medium-g2.html · Evals by Jetty · Run your own evals: https://jetty.io/?utm_source=evaljetty&utm_medium=llms