GPT-Live 1
Summary
GPT-Live 1 is a proprietary language model from OpenAI, released on 10 Sept 2026. It accepts text and audio and generates text and audio, with a 128K-token context window and up to 4K output tokens per response.
Full-duplex voice model for natural conversations that delegates reasoning and tools to a backend agent
Last verified 21 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | OpenAI |
|---|---|
| Release date | 10 Sept 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Proprietary (API only) [models.dev] |
| Context window | 128K (128,000 tokens) [models.dev] |
| Max output | 4K tokens [models.dev] |
| Knowledge cutoff | 31 Jul 2025 [models.dev] |
| Input | Text and audio [models.dev] |
| Output | Text and audio [models.dev] |
| Reasoning mode | No [models.dev] |
| Tool calling | Yes [models.dev] |
| Structured output | No [models.dev] |
GPT-Live 1 API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| Vercel AI Gateway openai/gpt-live-1 | – | – | – | – | models.dev, 21 Oct 2026 |
Frequently asked questions
What is the context window of GPT-Live 1?
GPT-Live 1 has a context window of 128,000 tokens (128K) and can generate up to 4,096 tokens in a single response, according to models.dev.
Is GPT-Live 1 open source?
No. GPT-Live 1 is a proprietary model; OpenAI has not released its weights. It is available through APIs including Vercel AI Gateway.
When was GPT-Live 1 released?
OpenAI released GPT-Live 1 on 10 Sept 2026, according to models.dev.
Change history
- Tool calling changed from no to yes
- Added to the directory
- Now listed on Vercel AI Gateway