As of Oct 27, 2026, GPT-6.1 terra costs $1.00 per million input tokens and $5.00 per million output tokens from OpenAI. None of its 3 sellers is cheaper than OpenAI. No price change since Appndo started tracking it on Oct 27, 2026. Recent price changes
Where to buy it (3)
Sorted by your monthly estimate. Prices per million tokens. OpenAI also lists batch $0.50 / $2.50, cache writes $1.25, up to 128K output tokens per request, and higher prices above a long-prompt threshold.
OpenAIOfficial
- Input / output
- $1.00 / $5.00
- Context
- 922K
- Per month
- $20.00¹
gpt-6.1-terra
- Input / output
- $1.00 / $5.00
- Context
- 1.05M
- Per month
- $20.00¹
gpt-6.1-terra
- Input / output
- $1.00 / $5.00
- Context
- 1.05M
- Per month
- $20.00¹
openai/gpt-6.1-terra
Cloud and hosted sellers may add regional pricing, minimums or platform fees. Supports: Vision, Reasoning, Tool calling, Web search.
Similar models
Common questions
How much does the GPT-6.1 terra API cost?
As of Oct 27, 2026, GPT-6.1 terra costs $1.00 per million input tokens and $5.00 per million output tokens at OpenAI's official price. Cached input costs $0.05 per million tokens.
Where is GPT-6.1 terra cheapest?
As of Oct 27, 2026, none of its 3 sellers charges less than OpenAI's official price.
What is the context length of GPT-6.1 terra?
GPT-6.1 terra takes up to 922K tokens of context through OpenAI's API; the limit differs between sellers.
How does GPT-6.1 terra compare with similar models?
GPT-6.1 terra has no LMArena score yet. Other OpenAI models and their cheapest price per million input / output tokens: gpt-oss-120b ($0.03 / $0.17), GPT-6 astra ($10.00 / $50.00), and GPT-6 luna ($0.10 / $0.50).