When was GPT-5 mini released?

GPT-5 mini was released by OpenAI on Thursday, Aug 7 2025.

GPT-5 mini was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.

How much does GPT-5 mini cost?

GPT-5 mini costs $0.25 per million input tokens and $2.00 per million output tokens through the OpenAI API. Cached input is $0.025 per million tokens. Rates are pay-as-you-go API prices verified against OpenAI's published pricing on August 18, 2026.

What benchmark scores did GPT-5 mini get?

GPT-5 mini reports 1 tracked benchmark score — ProgramBench: 0%. Tracked scores may come from lab reports or independent benchmarks; source details accompany the benchmark data.

Is GPT-5 mini open source?

No. GPT-5 mini is a closed model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

What came before and after GPT-5 mini?

OpenAI's previous tracked release was GPT-5 on Aug 7 2025. It was followed by GPT-5 nano on Aug 7 2025.

GPT-5 mini

Released Aug 7 2025

GPT-5 mini is an AI model released by OpenAI on Thursday, Aug 7 2025, the same day as GPT-5. Benchmark results (shown below) cover ProgramBench.

API pricing

Input: $0.25
Cached input: $0.025
Output: $2.00

Reasoning or thinking is supported.

USD per 1M tokens

Available from


OpenAI	—	flex	$0.125	$1.00	400K
OpenAI	—	—	$0.25	$2.00	400K
Azure	—	—	$0.25	$2.00	400K
Azure	swedencentral	—	$0.275	$2.20	400K

USD per 1M tokens

Benchmarks

ProgramBenchvia ProgramBench

#6 of 20

Source: ProgramBench, retrieved 11 September 2026. Other sources are identified on the linked benchmark pages.

Compare GPT-5 mini with

GPT-5 mini

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Frequently asked questions

: GPT-5 mini was released by OpenAI on Thursday, Aug 7 2025.
: GPT-5 mini was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.
: GPT-5 mini costs $0.25 per million input tokens and $2.00 per million output tokens through the OpenAI API. Cached input is $0.025 per million tokens. Rates are pay-as-you-go API prices verified against OpenAI's published pricing on August 18, 2026.
: GPT-5 mini reports 1 tracked benchmark score — ProgramBench: 0%. Tracked scores may come from lab reports or independent benchmarks; source details accompany the benchmark data.
: No. GPT-5 mini is a closed 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-5 on Aug 7 2025. It was followed by GPT-5 nano on Aug 7 2025.