GPT-6.1 Terra
GPT-6.1 TerraAlternatives?
CheaperGPT-6.1 Solhigh+11%-21%$0.32Remove unsupported parameters+5
BetterMiMo v2.6 ProthinkingOpen+7%-67%$0.13Context: 1.05M → 1M+4Lower effortSame modelxhigh-5%-52%$0.19
CheaperMiniMax M3.1 Flashthinking+4%-45%$0.22Context: 1.05M → 1M+2
CheaperClaude Haiku 5.5max-4%-47%$0.21Context: 1.05M → 1M+6GPT-6.1 Solhigh+11%-21%$0.32Remove unsupported parameters+5MiMo v2.6 ProthinkingOpen+7%-67%$0.13Context: 1.05M → 1M+4MiniMax M3.1 Flashthinking+4%-45%$0.22Context: 1.05M → 1M+2Claude Haiku 5.5max-4%-47%$0.21Context: 1.05M → 1M+6GPT-6 Solhigh-5%-8%$0.37MiMo v2.6 ProthinkingOpen+7%-67%$0.13Context: 1.05M → 1M+4GPT-6.1 Solmedium+8%-47%$0.21Remove unsupported parameters+5Claude Opus 5.5low+5%+37%$0.55Context: 1.05M → 1M+6GPT-6 Astralow+6%+103%$0.82Monitoring can return HTTP 403+2
Gemini 4 Argonhigh+23%+302%*$1.62Context: 1.05M → 1M+3MiMo v2.6 ProthinkingOpen+7%-67%$0.13Context: 1.05M → 1M+4
Kimi K3maxOpensame+396%$2.00Context: 1.05M → 1M+4
Step 5 PreviewthinkingOpensame+154%$1.03Context: 1.05M → 1M+3
Muse Spark OpenxhighOpen-5%+109%$0.84Context: 1.05M → 1M+2
DeepSeek V4.1 Flash 1017maxOpen-6%-35%$0.26Context: 1.05M → 1M+5GPT-6 Astramax+18%+707%$3.26Monitoring can return HTTP 403+2GPT-6.1 Solmax+14%+79%$0.72Remove unsupported parameters+5GPT-5.6 Solmax+7%+393%$1.99GPT-6 Solmax+4%+159%$1.04GPT-5.6 Terramax-7%+247%$1.40Prompts with >272K input tokensGPT-5.3 Codexxhigh-8%—$1.75 / $14Context: 1.05M → 400K+1GPT-5.5medium-8%+90%$0.77Prompts with >272K input tokensGPT-5.6 Lunamax-15%-56%$0.18All OpenAI models →History
2 versionsBenchmarks
in Chat & KnowledgeFAQ
How much does GPT-6.1 Terra cost?›
$1 per 1M input tokens and $5 per 1M output tokens; cached input $0.05 per 1M (cheapest host: OpenRouter). A typical benchmark task costs about $0.40 at max effort.
Is GPT-6.1 Terra free to use?›
There is no free API; the cheapest paid price is $1 per 1M input tokens.
How good is GPT-6.1 Terra, and what is it best at?›
#19 of 135 in Agents & Tool Use, #21 of 336 in Chat & Knowledge, #7 of 134 in Coding, #6 of 125 in Vision & Documents. Strongest at: Coding, Agents & work tasks, Reasoning, Long context, Knowledge, Vision.
Is GPT-6.1 Terra better than Step 5 Preview?›
On Humanity's Last Exam, GPT-6.1 Terra scores 46.2 vs 46.5 — about the same. It is 61% cheaper per task.
How can I use GPT-6.1 Terra?›
Through the API of OpenRouter.
What is the context window of GPT-6.1 Terra?›
1.05M tokens, with up to 128K output tokens.
When was GPT-6.1 Terra released? Is there a newer version?›
Released 2026-10-26. It is the current version in its line.
Is GPT-6.1 Terra open source?›
No, GPT-6.1 Terra is a closed model available through an API. The closest open-weights option here is MiMo v2.6 Pro.
Can GPT-6.1 Terra read images?›
It accepts text and images, PDF files as input.
What is GPT-6.1 Terra?›
GPT-6.1 Terra is a closed language model from OpenAI, released Oct 2026.
What are the best alternatives to GPT-6.1 Terra?›
GPT-6.1 Sol (cheaper), MiMo v2.6 Pro (better).