OpenAI / generation
GPT-6 family
Astra, Sol and Luna retain separate catalogue identities, as do their Pro-labelled rows. OpenAI’s direct API reasoning mode and marketplace model slugs are different integration surfaces.
Family research reviewed · Official source notes below
- Standard models
- 6
- Independently rated
- 1 / 6
- Known token rates
- 6 / 6
- Global balanced frontier
- 0
Before you choose
Direct API identity
OpenAI distinguishes the named model, reasoning mode and effort. A Pro-labelled marketplace row is retained separately and is not asserted to be a direct API model ID.
Compare exact catalogue rows
USD per 1M tokens. In / out are listed base rates; expand billing conditions before planning a request. LMArena scores measure the general preference board, not success on your engineering task. Unknown stays unknown.
Pro-labelled catalogue rows
| Model | LMArena | Input / output $/M | Context / max output | Capabilities & conditions |
|---|---|---|---|---|
GPT-6 Luna Proopenai/gpt-6-luna-pro | Unrated | $0.100 / $0.500Context tiers applyBilling details
Tool, media, cache-write and service-tier charges may add dimensions. Read the full model evidence. | 1,050,000Output 128,000 | file · image · textTools yes · reasoning yesWeights unknownReleased 2026-09-22 |
GPT-6 Sol Proopenai/gpt-6-sol-pro | Unrated | $2.00 / $10.00Context tiers applyBilling details
Tool, media, cache-write and service-tier charges may add dimensions. Read the full model evidence. | 1,050,000Output 128,000 | file · image · textTools yes · reasoning yesWeights unknownReleased 2026-09-22 |
GPT-6 Astra Proopenai/gpt-6-astra-pro | Unrated | $10.00 / $50.00Context tiers applyBilling details
Tool, media, cache-write and service-tier charges may add dimensions. Read the full model evidence. | 1,050,000Output 128,000 | file · image · textTools yes · reasoning yesWeights unknownReleased 2026-09-04 |
Other generation members
| Model | LMArena | Input / output $/M | Context / max output | Capabilities & conditions |
|---|---|---|---|---|
GPT-6 Lunaopenai/gpt-6-luna | Unrated | $0.100 / $0.500Context tiers applyBilling details
Tool, media, cache-write and service-tier charges may add dimensions. Read the full model evidence. | 1,050,000Output 128,000 | file · image · textTools yes · reasoning yesWeights unknownReleased 2026-09-22 |
GPT-6 Solopenai/gpt-6-sol | Unrated | $2.00 / $10.00Context tiers applyBilling details
Tool, media, cache-write and service-tier charges may add dimensions. Read the full model evidence. | 1,050,000Output 128,000 | file · image · textTools yes · reasoning yesWeights unknownReleased 2026-09-22 |
GPT-6 Astraopenai/gpt-6-astra | 1443.7±11.6 interval half-widthEffort: max | $10.00 / $50.00Context tiers applyBilling details
Tool, media, cache-write and service-tier charges may add dimensions. Read the full model evidence. | 1,050,000Output 128,000 | file · image · textTools yes · reasoning yesWeights unknownReleased 2026-09-04 |
Free and batch variants
These rows have different access or processing conditions. They are excluded from the standard-row counts above. A variant without a standard base remains a separately named variant.
- GPT-6 Luna Pro (batch)batch · $0.050 in / $0.250 out per 1M
- GPT-6 Luna (batch)batch · $0.050 in / $0.250 out per 1M
- GPT-6 Sol Pro (batch)batch · $1.00 in / $5.00 out per 1M
- GPT-6 Sol (batch)batch · $1.00 in / $5.00 out per 1M
- GPT-6 Astra (batch)batch · $5.00 in / $25.00 out per 1M
- GPT-6 Astra Pro (batch)batch · $5.00 in / $25.00 out per 1M
Sources and scope
- OpenAI model catalogue ↗
Exact named models on the vendor platform; not a promise about every reseller
Checked 2026-09-22 · official document opened and inspected - OpenAI reasoning guide ↗
Exact named models on the vendor platform; not a promise about every reseller
Checked 2026-09-22 · web opened; full official Markdown fetched with HTTP 200 and inspected
Source review does not refresh a price or transplant a benchmark score. Read the method and correction policy.
Questions this page answers
Are the GPT-6 family models interchangeable?
No. These are exact catalogue rows with separate capability, pricing and rating evidence. Compare the checkpoint, serving endpoint, reasoning settings and required input types. A family name does not establish equivalent behaviour.
How many OpenAI rows are compared here?
6 standard rows, of which 1 have an accepted LMArena general score and 6 have known input and output token rates. 6 related free or batch variants are listed separately.
What do the prices and frontier counts mean?
Prices below are listed US dollars per million input or output tokens, before request-specific context tiers and other billing dimensions. The frontier count comes from the global balanced view. Neither a family price range nor a benchmark difference proves your task will be cheaper or more successful.
How current are the official notes?
The linked family research was reviewed 2026-09-22. That date is separate from each accepted catalogue observation and each vendor’s effective date. An official note applies to its named platform, not automatically to every reseller.