GPT-6.1 Terra
GPT-6.1 TerraAlternatives?
CheaperGrok Build 0.1thinking+7%-38%$1 / $2Context: 1.05M → 256KBetterGPT-6 Lunamax+8%+24%$0.068Function calling only with none · Chat Completions+3
OpenMiMo v2.6 Prothinking+38%+144%$0.13Context: 1.05M → 1M+4
CheaperAgnes 2.5 Pro Beta+5%-93%$0.10 / $0.30Context: 1.05M → 1M
CheaperGemini 3.8 Flashlow+3%-25%*$0.75 / $3.75Context: 1.05M → 1M+2Grok Build 0.1thinking+7%-38%$1 / $2Context: 1.05M → 256KAgnes 2.5 Pro Beta+5%-93%$0.10 / $0.30Context: 1.05M → 1MGemini 3.8 Flashlow+3%-25%*$0.75 / $3.75Context: 1.05M → 1M+2MMotif 3Open+3%-56%$0.50 / $2Context: 1.05M → 262K+1Gemini 3 Flash Previewthinkingsame-44%$0.50 / $3Context: 1.05M → 1MGPT-6 Lunamax+8%+24%$0.068Function calling only with none · Chat Completions+3
Claude Haiku 5.5xhigh+19%+127%$0.12Context: 1.05M → 1M+6GPT-6.1 Sollow+32%+139%$0.13Remove unsupported parameters+5MiMo v2.6 ProthinkingOpen+38%+144%$0.13Context: 1.05M → 1M+4GPT-5.6 Lunamax+10%+226%$0.18MiMo v2.6 ProthinkingOpen+38%+144%$0.13Context: 1.05M → 1M+4
Kimi K3maxOpen+31%+3,561%$2.00Context: 1.05M → 1M+4
Step 5 PreviewthinkingOpen+30%+1,778%$1.03Context: 1.05M → 1M+3
Muse Spark OpenxhighOpen+23%+1,445%$0.84Context: 1.05M → 1M+2
DeepSeek V4.1 Flash 1017maxOpen+21%+380%$0.26Context: 1.05M → 1M+5GPT-6 Astralow+37%+1,396%$0.82Monitoring can return HTTP 403+2GPT-6.1 Sollow+32%+139%$0.13Remove unsupported parameters+5GPT-5.3 Codexxhigh+19%—$1.75 / $14Context: 1.05M → 400K+1GPT-5.6 Sollow+10%+377%$0.26GPT-6 Sollowsame+143%$0.13GPT-5.5low-9%—$5 / $30Prompts with >272K input tokensGPT-5.4low-14%—$2.50 / $15GPT-5.6 Terralow-18%+164%$0.14Prompts with >272K input tokensAll 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 $0.055 at low 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?›
#30 of 135 in Agents & Tool Use, #60 of 336 in Chat & Knowledge, #32 of 134 in Coding, #10 of 125 in Vision & Documents. Strongest at: Coding, 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 95% 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?›
Grok Build 0.1 (cheaper), GPT-6 Luna (better), MiMo v2.6 Pro (open weights).