GPT-5
Released
GPT-5 is an AI model released by OpenAI on Thursday, Aug 7 2025, 2 days after gpt-oss-20b. Benchmark results (shown below) cover BullshitBench v2.
API pricing
- InputWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it.
- $1.25
- Cached inputA reduced rate for text you send over and over. If every request starts with the same instructions or the same document, the provider keeps a copy ready and charges less to read it again.
- $0.125
- OutputWhat you pay for the text the model writes back. It is normally the dearer half: producing an answer costs more than reading one.
- $10.00
Available from
| Azure | — | $1.25 | $10.00 | 400K |
|---|---|---|---|---|
| Azure | swedencentral | $1.375 | $11.00 | 400K |
Benchmarks
About
GPT-5, released August 7, 2025, collapsed OpenAI's confusing two-track lineup — GPT-4.1 for speed, o3 for reasoning — into a single system with a router that decides per request how much thinking a question deserves. It launched simultaneously in mini, nano, and Pro variants and became the default for ChatGPT's hundreds of millions of users, including the free tier.
The launch drew a famously mixed reception: benchmark gains over o3 were real but incremental, and the router initially frustrated users who wanted explicit model control. OpenAI iterated quickly — GPT-5.1 in November 2025 reworked the model's personality and adaptive reasoning, and the GPT-5.x line carried OpenAI's flagship branding for the next ten months, through GPT-5.6, until the GPT-6 generation opened with Astra in September 2026.
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Frequently asked questions
GPT-5 was released by OpenAI on Thursday, Aug 7 2025.
GPT-5 was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.
GPT-5 costs $1.25 per million input tokens and $10.00 per million output tokens through the OpenAI API. Cached input is $0.125 per million tokens. Rates are pay-as-you-go API prices verified against OpenAI's published pricing on August 18, 2026.
GPT-5 reports 1 tracked benchmark score — BullshitBench v2: 21%. Scores are the figures published at release by OpenAI.
No. GPT-5 is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.
OpenAI's previous tracked release was gpt-oss-20b on Aug 5 2025, 2 days earlier. It was followed by GPT-5 mini on Aug 7 2025.