GPT-6 Luna
Summary
GPT-6 Luna is a proprietary language model from OpenAI, released on 22 Sept 2026. It accepts text, images and PDFs and generates text, with a 1.1M-token context window and up to 128K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.10 per million input tokens and $0.50 per million output tokens (OpenAI API), across 5 providers we track.
OpenAI's most efficient model for focused, high-volume tasks
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | OpenAI |
|---|---|
| Release date | 22 Sept 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Proprietary (API only) [models.dev] |
| Context window | 1.1M (1,050,000 tokens) [models.dev] |
| Max output | 128K tokens [models.dev] |
| Knowledge cutoff | 18 May 2026 [models.dev] |
| Input | Text, images and PDFs [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | Yes [models.dev] |
| Tool calling | Yes [models.dev] |
| Structured output | Yes [models.dev] |
GPT-6 Luna API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenAI API gpt-6-luna | $0.10 | $0.50 | $0.01 | 1.1M | models.dev, 4 Oct 2026 |
| Azure AI Foundry gpt-6-luna | $0.10 | $0.50 | $0.01 | 1.1M | models.dev, 4 Oct 2026 |
| Amazon Bedrock global.openai.gpt-6-luna | $0.10 | $0.50 | $0.01 | 1.1M | models.dev, 4 Oct 2026 |
| OpenRouter openai/gpt-6-luna | $0.10 | $0.50 | $0.01 | 1.1M | OpenRouter, 4 Oct 2026 |
| Vercel AI Gateway openai/gpt-6-luna | $0.10 | $0.50 | $0.01 | 1.1M | models.dev, 4 Oct 2026 |
| Amazon Bedrock us.openai.gpt-6-luna | $0.11 | $0.55 | $0.01 | 1.1M | models.dev, 4 Oct 2026 |
| Amazon Bedrock openai.gpt-6-luna | $0.11 | $0.55 | $0.01 | 1.1M | models.dev, 4 Oct 2026 |
| Vercel AI Gateway openai/gpt-6-luna-fast | $0.20 | $1 | $0.02 | 1.1M | models.dev, 4 Oct 2026 |
Frequently asked questions
What is the context window of GPT-6 Luna?
GPT-6 Luna has a context window of 1,050,000 tokens (1.1M) and can generate up to 128,000 tokens in a single response, according to models.dev.
How much does the GPT-6 Luna API cost?
Through OpenAI API, GPT-6 Luna costs $0.10 per million input tokens and $0.50 per million output tokens. Prices last verified 4 Oct 2026.
Is GPT-6 Luna open source?
No. GPT-6 Luna is a proprietary model; OpenAI has not released its weights. It is available through APIs including OpenAI API, Azure AI Foundry, Amazon Bedrock, OpenRouter.
When was GPT-6 Luna released?
OpenAI released GPT-6 Luna on 22 Sept 2026, according to models.dev.
Which providers offer GPT-6 Luna?
We track GPT-6 Luna on 5 providers: OpenAI API, Azure AI Foundry, Amazon Bedrock, OpenRouter, Vercel AI Gateway.
Change history
No changes detected since we started tracking this model. We re-check every source daily.
Sources
- https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-6-luna.toml
- https://github.com/sst/models.dev/blob/dev/providers/azure/models/gpt-6-luna.toml
- https://github.com/sst/models.dev/blob/dev/providers/amazon-bedrock/models/global.openai.gpt-6-luna.toml
- https://openrouter.ai/openai/gpt-6-luna
- https://github.com/sst/models.dev/blob/dev/providers/vercel/models/openai/gpt-6-luna.toml
- https://github.com/sst/models.dev/blob/dev/providers/amazon-bedrock/models/us.openai.gpt-6-luna.toml
- https://github.com/sst/models.dev/blob/dev/providers/amazon-bedrock/models/openai.gpt-6-luna.toml
- https://github.com/sst/models.dev/blob/dev/providers/vercel/models/openai/gpt-6-luna-fast.toml