GPT-6 Luna
OpenAIReleased Sep 22, 2026Closed weightsgpt-6-luna
- Intelligence (Epoch)
- 157 · 21st of 111
- Knowledge cutoff
- April 2026
- Context
- 1M tokens
- Max output
- 128k tokens
- Input
- text, image
- OpenAI's API
- yes, as gpt-6-luna
Read Sep 28, 00:00 UTC from the hosts' published offers and OpenRouter, spec sheet from OpenAI · cutoff: platform.openai.com
Intelligence for the price
1 model scores higher for the same price or less; it ranks 2 of the 28 models at its price or below.
Epoch Capabilities Index against the lowest input + output price per M, log scale · prices Sep 28. Score: Epoch AI, CC BY 4.0, 157 with an interval of 154 to 159.
Against its rivals
Its previous version, the best of its price range and the top score
- GPT-6 Lunathis model$0.60157
- Claude Opus 5.5top score$24.00169
- Claude Haiku 5.5same price range$0.60159
- DeepSeek V4.1 Flashsame price range$0.47156
- GPT-5.6 Lunaprevious version$1.40156
Same level for 3.2× less: GLM-5.3-Flash at StreamLake, $0.19 per M input + output · their Epoch intervals overlap (153 against 157).
Bars: Epoch Capabilities Index (Epoch AI, CC BY 4.0), drawn from 100, below the lowest score in the catalogue · price: lowest input + output per M.
| Provider | Input | Output | Cache ↑ | Checked |
|---|---|---|---|---|
| OpenAI | $0.10 | $0.50 | $0.01 | Sep 28 |
1 provider · prices per million tokens, read Sep 28, 00:00 UTC
| Provider | Weights | Context | Max output | Tools | Structured outputs | Reasoning |
|---|---|---|---|---|---|---|
| OpenAI | — | 1.05M | 125K | — | — | — |
As served by each host and declared to OpenRouter; not verified by us · weights: the precision the host declares
GPT-6 Luna spec sheet, field by field, with sources
GPT-6 Luna spec sheetmaker-declared
What the maker declares about the model itself — read from its own weights repository and documentation, not from any host. What each endpoint actually serves is in the pricing above: the two can differ, and both are true.
- Context window
- to verify
- Parameters
- to verify
- Active experts
- to verify
- Weight precision
- not applicable — no weights published
- License
- Proprietary — API onlyScope: the licence on the published weights, and nothing else. It is not the maker's acceptable-use policy, which is a separate document, and it is not the contract you sign with whichever host you call — hosts set their own terms, which this index does not read.
- Knowledge cutoff
- April 2026maker's docs
- Modalities
- to verify
- Max output (official)
- to verify
- Release date
- to verify≈ September 22, 2026 third-party catalogue — not the maker's figure
- Maker lifecycle status
- to verify
openai.com · maker's documentation · 2 of 10 fields published by the maker
| Provider | Chatbot 1,000 in / 500 out | RAG / long context 8,000 in / 500 out | Batch summarize 4,000 in / 1,000 out |
|---|---|---|---|
| OpenAI | $0.35 | $1.05 | $0.90 |
What each host bills for 1,000 requests of a representative job
Your own workload
Other OpenAI models · all its models, hosts and history ›
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- GPT-4.11 provider · from $10.00