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GPT-6.1 Terra

OpenAIReleased Oct 26, 2026Closed weightsgpt-6.1-terra

Compare with other models
Reasoning
yes, with effort levels
Knowledge cutoff
June 2026
Context
1M tokens
Max output
128K tokens
Input
text, image
API features
tools, structured outputs, JSON mode, seed
OpenAI's API
yes, as gpt-6.1-terra

Read Nov 3, 11:57 UTC from the hosts' published offers and OpenRouter, spec sheet from OpenAI · cutoff: developers.openai.com

Input, per M$1.00at OpenAI
Cache, per M$0.05at OpenAI
Speed43 tok/sat OpenAI, on OpenRouter
Providers1its maker's own price, for reference
ProviderInputOutputCache ↑tok/sFirst tokenUptime 24hChecked
OpenAI$1.00$5.00$0.05432.17 s100%Nov 3

1 provider · prices per million tokens, read Nov 3, 11:57 UTC · speed: OpenRouter, median of the last 30 min, read Nov 3, 11:57 UTC · uptime: OpenRouter, last 24 h

ProviderWeightsContextMax outputToolsStructured outputsReasoning
OpenAI—1.05M125Kyesyesyes

As served by each host and declared to OpenRouter; not verified by us · weights: the precision the host declares

GPT-6.1 Terra spec sheet, field by field, with sources

GPT-6.1 Terra spec sheetmaker-declared

What OpenAI declares, from its own weights and docs. What each host serves is in the offers: both can be true.

Context window
1,050,000 tokens
Parameters
not published by the maker
Active experts
not published by the maker
Weight precision
not applicable — no weights publishedcurated
License
Proprietary — API onlycuratedScope: the license of the published weights only — not the maker's acceptable-use policy, nor the terms of the host you call.
Knowledge cutoff
June 1, 2026
Modalities
text · image → text
Max output (official)
128,000 tokens
Release date
October 26, 2026maker's docs · read 2026-11-02
Maker lifecycle status
to verify

developers.openai.com · maker's documentation · read 2026-11-02 · 6 of 10 fields published by the maker

ProviderChatbot 1,000 in / 500 outRAG / long context 8,000 in / 500 outBatch summarize 4,000 in / 1,000 out
OpenAI$3.50$10.50$9.00

What each host bills for 1,000 requests of a representative job

Your own workload

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