OpenAI · Released Aug 7, 2025GPT-5 Mini
Small GPT-5 for responsive agents, coding help, and everyday automation.
- Capability
- 145.5ECI · #77 of 148
- Input
- $0.25per 1M tokens
- Output
- $2.00per 1M tokens
- Context
- 400K128K max output
What it costs
- Input
- $0.25per million tokens
- Output
- $2.00per million tokens
- Cached input
- $0.025per million tokens
- Blended (3:1)
- $0.688cheaper than 54% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $1.50 |
| Team assistant25M input + 5M output tokens | $16.25 |
| Production app250M input + 50M output tokens | $162.50 |
Official OpenAI API price, as listed on models.dev.
Independent benchmarks
#77 of 148 scored models
The shaded band is Epoch AI’s confidence range (143.6–147.0); the tick marks the median scored model.
Scores from Epoch AI, run independently of OpenAI.
The details
- Lab
- OpenAI
- Released
- Aug 7, 2025
- Knowledge cutoff
- May 30, 2024
- Context window
- 400,000 tokens
- Max output
- 128,000 tokens
- Inputs
- Text, Images
- Output
- Text
- Reasoning
- Adjustable effort minimal · low · medium · high
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Proprietary
- API model ID
gpt-5-minion OpenAI- Availability
- 23 API providerslisted on models.dev
More from OpenAI
About GPT-5 Mini
How much does GPT-5 Mini cost?
GPT-5 Mini costs $0.25 input / $2.00 output per million tokens (official OpenAI API price). Cached input is $0.025 per million tokens. At a 3:1 input-to-output mix that is $0.688 per million tokens, cheaper than 54% of the 360 priced models we track.
What is the context window of GPT-5 Mini?
GPT-5 Mini accepts up to 400,000 tokens per request and can write up to 128,000 tokens in one response.
How good is GPT-5 Mini?
Epoch AI gives GPT-5 Mini a Capabilities Index score of 145.5 (likely range 143.6–147.0), ranking it #77 of 148 models Epoch has scored. Epoch AI benchmark results: GPQA Diamond 75.0%, FrontierMath Tiers 1–3 46.7%, OTIS Mock AIME 2024–2025 86.7%, SWE-bench Verified 64.7%, SimpleQA Verified 21.6%.
Is GPT-5 Mini open source?
No. GPT-5 Mini is proprietary; you use it through OpenAI’s API or partner platforms.
What inputs does GPT-5 Mini support?
GPT-5 Mini accepts text and images and replies in text. It is a reasoning model with minimal, low, medium and high effort settings, supports tool calling and can return structured JSON output.
When was GPT-5 Mini released?
OpenAI released GPT-5 Mini on Aug 7, 2025. Its training data runs to May 30, 2024.
What are the best alternatives to GPT-5 Mini?
The closest current models from other labs on capability, price and release date are Kimi K2 Thinking (Moonshot AI, ECI 146.0, $0.60 / $2.50), MiniMax-M2.7 (MiniMax, ECI 145.9, $0.30 / $1.20), Qwen3.5 Plus (Alibaba (Qwen), ECI 146.8, $0.40 / $2.40) and GLM-4.7 (Z.ai (Zhipu), ECI 143.5, $0.60 / $2.20).