# GPT-Live 1 [Canonical model page](https://headlessthrones.com/models/gpt-live-1) · [Model library](https://headlessthrones.com/models) Public catalog reference from Headless Thrones. Exact catalog ID: `gpt-live-1`. Catalog source-check date: 2026-10-23. This brief contains the public catalog answers and any catalog guide, not private drafts, historical editorial revisions or independently measured rankings. The canonical HTML page may also display separately published editorial. Current catalog answers ## What to know about GPT-Live 1 AI-compiled from linked model documentation. This is a catalog reference, not an independent performance review. Catalog checked October 23, 2026. [Exact model](https://headlessthrones.com/models/gpt-live-1#model-answer-identity) · [Access](https://headlessthrones.com/models/gpt-live-1#model-answer-access) · [Dates & knowledge](https://headlessthrones.com/models/gpt-live-1#model-answer-dates) · [Inputs & outputs](https://headlessthrones.com/models/gpt-live-1#model-answer-modalities) · [Model details](https://headlessthrones.com/models/gpt-live-1#model-answer-research) ### Which GPT-Live 1 does this page describe? GPT-Live 1 is a model record from **OpenAI** in the GPT family. [Source](https://developers.openai.com/api/docs/models/gpt-live-1) The recorded model identifier or checkpoint is `gpt-live-1`. Use that exact identifier when checking documentation or a provider listing. [Source](https://developers.openai.com/api/docs/models/gpt-live-1) ### How can you access GPT-Live 1? The catalog documents **API** access for GPT-Live 1. [Source](https://developers.openai.com/api/docs/models/gpt-live-1) As of the catalog check, this version was listed as available. [Source](https://developers.openai.com/api/docs/models/gpt-live-1) For API use, confirm the exact model identifier, your account and region, and the endpoint's current limits in the linked documentation. An API listing does not establish access through a consumer subscription. ### What dates are documented for GPT-Live 1? **Knowledge cutoff: July 31, 2025.** [Source](https://developers.openai.com/api/docs/models/gpt-live-1) This labels the documented knowledge boundary; it is not a promise that every earlier fact is known or correct. Retrieval or web tools can supply newer information at run time. That does not change the model's recorded training or knowledge dates, and this record does not establish that a particular endpoint includes those tools. ### What can GPT-Live 1 receive and generate? Documented inputs: **audio and text**. [Source](https://developers.openai.com/api/docs/models/gpt-live-1) Documented outputs: **audio and text**. [Source](https://developers.openai.com/api/docs/models/gpt-live-1) Input support and output generation are separate capabilities. Reading an image does not establish image generation; a text output listing does not establish speech output. File sizes, formats and media limits depend on the documented implementation. ### What distinguishes GPT-Live 1? These details come from the linked publisher material for this model. Reported capabilities and training descriptions are publisher statements, not independent test results. **Session pricing**: Voice sessions cost $0.05 per minute, billed per second without rounding up to a whole minute. Backend model and tool calls are billed separately; this is not a per-token rate. [Source](https://developers.openai.com/api/docs/models/gpt-live-1.md) **Endpoint and delegation**: This full-duplex voice model uses v1/live/sessions. It can listen and speak simultaneously and delegate reasoning/tool work to a backend agent; it is not served through the ordinary Realtime endpoint. [Source](https://developers.openai.com/api/docs/models/gpt-live-1.md) **Usage tiers**: The model page measures rate limits in concurrent sessions and excludes the Free usage tier. It lists Build 50, Launch 300 and Grow 500 concurrent sessions. [Source](https://developers.openai.com/api/docs/models/gpt-live-1.md) **Evidence still missing here:** complete input/output pricing and context or input capacity. Missing documentation is not evidence that a feature is unavailable. Headless Thrones has not independently benchmarked this model for this reference. Evaluate it on representative work before choosing it; these facts do not rank its accuracy, reliability, speed or suitability against another model. Keep the exact version in view ## Other GPT models from OpenAI. These are separate records in the same publisher family. A shared family name does not establish equal capabilities or interchangeable licenses. ### [Chat Latest](https://headlessthrones.com/models/chat-latest) API · 400,000 context tokens ### [GPT-5.2](https://headlessthrones.com/models/gpt-5-2) API · 400,000 context tokens ### [GPT-5.2 Pro](https://headlessthrones.com/models/gpt-5-2-pro) API · 400,000 context tokens ### [GPT-5.4](https://headlessthrones.com/models/gpt-5-4) API · 1,050,000 context tokens ### [GPT-5.4 Mini](https://headlessthrones.com/models/gpt-5-4-mini) API · 400,000 context tokens ### [GPT-5.4 Pro](https://headlessthrones.com/models/gpt-5-4-pro) API · 1,050,000 context tokens