OpenAI · Frontier
Checked as of 2026-10-23
GPT
OpenAI's GPT-6 line: a clear three-tier price ladder over a 1M-token context.
At a glance
- Licence
- Proprietary OpenAI Services Agreement
Closed weights. OpenAI's separate gpt-oss models are open-weight under Apache-2.0 and are not covered here.
- Access
- APIBedrockAzure
Variants 4
| Model | Context | $ in / 1M | $ out / 1M | Inputs | Status |
|---|---|---|---|---|---|
GPT-6 Astra
gpt-6-astra
Over 272K input tokens: $20 / $75. |
1.05M | $10 | $50 | text, image | current |
GPT-6.1 Sol
gpt-6.1-sol
Over 272K input tokens: $4 / $15. |
1.05M | $2 | $10 | text, image | current |
GPT-6 Luna
gpt-6-luna
Over 272K input tokens: $0.20 / $0.75. |
1.05M | $0.1 | $0.5 | text, image | current |
GPT-5.6 Sol
gpt-5.6-sol
Previous generation. OpenAI does not call it legacy. The price shown is promotional, 'at least through November 21, 2026'; the price after that is not published. |
1.05M | $4 | $20 | text, image | legacy |
"—" means the figure could not be verified from a primary source on 2026-10-23 and has been left blank rather than guessed. Prices are USD per million tokens at the standard tier.
Strengths
- 1.05M-token context (up to 922K of it input) and 128K output across the GPT-6 lineup.
- A clear price ladder from $0.10 to $10 per million input tokens, with Batch and Flex at 50% off.
- On Amazon Bedrock and Microsoft Foundry as well as OpenAI's own API.
Watch out for
- Prompts over 272K input tokens cost 2× input and 1.5× output for the whole request.
- GPT-6 models take text and images only. Audio and video need OpenAI's separate realtime and transcription models.
- Some features (tool calling on Sol, built-in tools on Luna) need the Responses API rather than Chat Completions.
- Frequent renames and retirements. Pin a model ID and watch the deprecations page.