OpenAI · language model
GPT Chat Latest: pricing, context and benchmarks
GPT Chat Latest is a language model from OpenAI released on May 5, 2026. It costs $5 per million input tokens and $30 per million output tokens, with a 400K-token context window. No independent score has been published for it so far.
What you need to know about GPT Chat Latest
GPT Chat Latest was released by OpenAI (United States) on May 5, 2026. It accepts text, images, and files as input and produces text. Its context window reaches 400,000 tokens, larger than 64 % of the models in the registry, and it can write up to 128,000 tokens in one go.
It has been available for about 6 months, long enough for its prices and scores to have settled.
GPT Chat Latest pricing
On OpenRouter, GPT Chat Latest costs $5 per million input tokens and $30 per million output tokens. Counting three tokens read for every token written, its average price is $11.25 per million, more expensive than 96 % of paid models (14.8 times the median of $0.76).
A concrete example: a task that sends 2,000 tokens (about 1,500 words) and receives a 500-token answer costs $0.025. At 1,000 tasks a day, budget $750 a month. The price calculator redoes this with your own volumes.
Tokens already sent and cached are billed at $0.5 per million.
Performance and benchmarks
Epoch AI does not yet publish a capabilities index for GPT Chat Latest. We therefore show no made-up performance rating: only price, context and features count towards its score.
Features, privacy and local use
- It supports tool calling, so it can drive an AI agent, call APIs or MCP servers.
- It can answer in an enforced JSON format (structured outputs).
Its weights are not published: it can only be used through the OpenAI API or a broker such as OpenRouter, which means sending your data off your machines.
Other OpenAI models
| Model | Released | Avg. price | ECI |
|---|---|---|---|
| GPT-6.1 Sol | Sep 29, 2026 | $4 | 168.4 |
| GPT-6.1 Sol Pro | Sep 29, 2026 | $4 | — |
| GPT-6 Sol | Sep 22, 2026 | $4 | 163.7 |
| GPT-6 Luna | Sep 22, 2026 | $0.2 | 156.8 |
| GPT-6 Luna Pro | Sep 22, 2026 | $0.2 | — |
| GPT-6 Sol Pro | Sep 22, 2026 | $4 | — |
| GPT-6 Astra | Sep 4, 2026 | $20 | 168.8 |
| GPT-6 Astra Pro | Sep 4, 2026 | $20 | — |
Verdict
GPT Chat Latest scores 32/100 on our grid, which only uses published figures.
Strengths
- Agent-ready: tool calling and structured JSON output.
Limitations
- Expensive: costlier than 96 % of paid models.
- No independent score published: performance cannot be verified.
Avoid if…
- you process large volumes on a tight budget;
- your data must not leave your servers.
Alternatives
- Fugu Ultra v2$11.25
- Fugu Ultra$11.25
- Claude Fable 5.1$20
- Claude Opus 5$10
- Claude Fable 5$20
- Claude Opus 4.8$10
Comparisons and tools
Learn more
Frequently asked questions
How much does GPT Chat Latest cost?
$5 per million input tokens and $30 per million output tokens on OpenRouter (checked October 25, 2026). A task with 2,000 tokens read and 500 written costs $0.025.
How big is GPT Chat Latest's context window?
400,000 tokens, roughly 300,000 words, with a maximum of 128,000 output tokens.
Can GPT Chat Latest run locally?
No, OpenAI does not publish its weights: it is API-only.
Is GPT Chat Latest suitable for an AI agent?
Technically yes: it supports tool calling and structured outputs. Then check its cost for your volume.
What are the alternatives to GPT Chat Latest?
The closest models on price and performance are Fugu Ultra v2, Fugu Ultra, and Claude Fable 5.1.
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Neutrality. No affiliate links. No vendor pays to be reviewed, rated or ranked. Reviews are directed by François Chollet, neutral and factual, and every data point is dated and sourced. How we score