{"schema":"postcutoff/model@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/m/gpt-6-1-terra/","md":"https://postcutoff.com/m/gpt-6-1-terra/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"gpt-6-1-terra","name":"GPT-6.1 Terra","org":"OpenAI","family":"GPT-6","released":"2026-10-26","status":"current","type":"reasoning-llm","modality_in":["text","image"],"modality_out":["text"],"open_weights":false,"model_license":"proprietary","context_window":1050000,"max_output":128000,"knowledge_cutoff":"2026-06","pricing":{"input":1,"cached_input":0.05,"output":5,"cache_write":1.25,"unit_note":"cache writes $1.25 (30-minute retention) or $2.50 (12-hour retention); prompts >272K input tokens billed at 2x input/cache and 1.5x output for the whole request","unit":"per 1M tokens (USD), standard tier","source":"https://developers.openai.com/api/docs/models/gpt-6.1-terra"},"price_line":"$1 in, $5 out per 1M tokens","access":[{"provider":"OpenAI API","model_id":"gpt-6.1-terra","endpoint":"https://api.openai.com/v1/responses","docs":"https://developers.openai.com/api/docs/models/gpt-6.1-terra"},{"provider":"Web app (ChatGPT Work, Plus/Pro/Enterprise/Edu)","url":"https://chatgpt.com"},{"provider":"Codex","url":"https://developers.openai.com/codex/changelog"}],"capabilities":[{"name":"Computer use at half the mid-tier price","detail":"$1/$5 per 1M tokens with the computer_use tool in the Responses API; OpenAI says it finishes computer-use tasks over 3x faster than GPT-6 Astra and GPT-6.1 Sol (vendor claim).","first":false,"discovered":"launch","source":"https://www.bleepingcomputer.com/news/artificial-intelligence/openai-launches-gpt-61-terra-with-3x-faster-ai-agents-50-percent-lower-pricing/"},{"name":"Near-Sol intelligence per dollar","detail":"Artificial Analysis Intelligence Index 48 at max effort (GPT-6.1 Sol 52) for about $0.40 per index task; 90.9 output tokens/s.","first":false,"discovered":"launch","source":"https://artificialanalysis.ai/models/gpt-6-1-terra"},{"name":"Fewer guesses when unsure","detail":"AA-Omniscience: guesses instead of abstaining 38% of the time, vs 88% for GPT-5.6 Terra (per The Decoder's reading of Artificial Analysis).","first":false,"discovered":"launch","source":"https://the-decoder.com/gpt-6-1-terra-halves-openais-api-prices-and-still-gains-ground-on-its-larger-models/"},{"name":"Critical cyber classification for a mid-size model","detail":"System card addendum: treated as Critical in cybersecurity and High in biology/chemistry, with GPT-6 Astra's safeguard stack; ExploitBench 97.10%.","first":false,"discovered":"launch","source":"https://deploymentsafety.openai.com/gpt-6-1-terra"}],"entry":"2026-10-26-gpt-6-1-terra","notes":"Mid-size GPT-6 model between GPT-6 Luna and GPT-6.1 Sol; successor to GPT-5.6 Terra. reasoning.effort none/low/medium(default)/high/xhigh/max. Max input 922K tokens. Tool calling needs the Responses API (tools: web/file search, image generation, code interpreter, hosted shell, apply patch, skills, computer use, MCP, tool search). No audio/video input. Rate limits up to 15,000 RPM / 40M TPM (Grow tier). OpenAI still recommends GPT-6.1 Sol or GPT-6 Astra for the hardest coding.","verified":"2026-10-26","body_md":"OpenAI's cheaper everyday model for computer use, visual reasoning and writing, released Oct 26, 2026.","page_url":"https://postcutoff.com/m/gpt-6-1-terra/","events_after":1795,"major_after":409,"historic_after":81,"missing_at_launch":1368,"events_since_release":null,"you_url":"https://postcutoff.com/you/gpt-6-1-terra/","briefings":{"xs":"https://postcutoff.com/briefings/cutoff-2026-06-xs.md","s":"https://postcutoff.com/briefings/cutoff-2026-06-s.md","m":"https://postcutoff.com/briefings/cutoff-2026-06-m.md","full":"https://postcutoff.com/briefings/cutoff-2026-06.md"}}