GPT-6.1 Terra
GPT-6.1 TerraAlternatives?
CheaperClaude Haiku 5.5xhigh-6%-8%$0.12Context: 1.05M → 1M+6
BetterMiMo v2.6 ProthinkingOpen+6%same$0.13Context: 1.05M → 1M+4Lower effortSame modelmedium-6%-29%$0.095CheaperGPT-6 Lunamax-13%-49%$0.068Function calling only with none · Chat Completions+3CheaperMiMo v2.6 FlashthinkingOpen-14%-54%$0.062Context: 1.05M → 1M+4Claude Haiku 5.5xhigh-6%-8%$0.12Context: 1.05M → 1M+6GPT-6 Lunamax-13%-49%$0.068Function calling only with none · Chat Completions+3MiMo v2.6 FlashthinkingOpen-14%-54%$0.062Context: 1.05M → 1M+4
Agnes 2.5 Pro Beta-20%-93%$0.10 / $0.30Context: 1.05M → 1MGPT-5.6 Lunaxhigh-21%-36%$0.085MiMo v2.6 ProthinkingOpen+6%same$0.13Context: 1.05M → 1M+4GPT-6.1 Solmedium+9%+59%$0.21Remove unsupported parameters+5Claude Sonnet 5.5high+7%+559%$0.88Context: 1.05M → 1M+6GPT-6 Solmax+9%+678%$1.04Claude Opus 5.5medium+17%+895%$1.34Context: 1.05M → 1M+6MiMo v2.6 ProthinkingOpen+6%same$0.13Context: 1.05M → 1M+4
DeepSeek V4.1 Flash 1017maxOpen+3%+95%$0.26Context: 1.05M → 1M+5
GLM 5.3maxOpensame+1,393%$2.01Context: 1.05M → 1M+5
Step 5 PreviewthinkingOpensame+664%$1.03Context: 1.05M → 1M+3
Kimi K3maxOpensame+1,389%$2.00Context: 1.05M → 1M+4GPT-6 Astrahigh+16%+1,185%$1.73Monitoring can return HTTP 403+2GPT-6.1 Solhigh+15%+138%$0.32Remove unsupported parameters+5GPT-6 Solhigh-3%+178%$0.37GPT-5.6 Solhigh-3%+502%$0.81GPT-5.5high-16%+942%$1.40Prompts with >272K input tokensGPT-5.6 Terrahigh-22%+152%$0.34Prompts with >272K input tokensGPT-6 Lunahigh-25%-78%$0.029Function calling only with none · Chat Completions+3GPT-5.3 Codexxhigh-26%—$1.75 / $14Context: 1.05M → 400K+1All 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 $0.13 at high 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?›
#24 of 135 in Agents & Tool Use, #31 of 336 in Chat & Knowledge, #12 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 Claude Fable 5?›
On AA Intelligence Index 4.3.2, GPT-6.1 Terra scores 48.1 vs 49.6 — lower. It is 98% 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?›
Claude Haiku 5.5 (cheaper), MiMo v2.6 Pro (better).