# GPT-5 Mini

> GPT-5 Mini is a proprietary language model from OpenAI, released on 7 Aug 2025. It accepts text and images and generates text, with a 400K-token context window and up to 128K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.25 per million input tokens and $2 per million output tokens (OpenAI API), across 6 providers we track.

Source page: https://www.aimodel.directory/models/gpt-5-mini
Last verified: 4 Oct 2026

## Specifications

- **Developer:** OpenAI
- **Release date:** 7 Aug 2025 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5-mini.toml)
- **Status:** Generally available (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5-mini.toml)
- **Weights:** Proprietary (API only) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5-mini.toml)
- **Context window:** 400K (400,000 tokens) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5-mini.toml)
- **Max output:** 128K tokens (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5-mini.toml)
- **Knowledge cutoff:** 30 May 2024 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5-mini.toml)
- **Input:** Text and images (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5-mini.toml)
- **Output:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5-mini.toml)
- **Reasoning mode:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5-mini.toml)
- **Tool calling:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5-mini.toml)
- **Structured output:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/openai/models/gpt-5-mini.toml)

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|
| OpenAI API | $0.25 | $2 | $0.03 | 400K |
| Azure AI Foundry | $0.25 | $2 | $0.03 | 400K |
| Databricks | $0.25 | $2 | $0.03 | 400K |
| OpenRouter | $0.25 | $2 | $0.03 | 400K |
| Vercel AI Gateway | $0.25 | $2 | $0.03 | 400K |
| Vercel AI Gateway | $0.45 | $3.60 | $0.04 | 400K |
| Snowflake Cortex | – | – | – | 272K |

## FAQ

### What is the context window of GPT-5 Mini?

GPT-5 Mini has a context window of 400,000 tokens (400K) and can generate up to 128,000 tokens in a single response, according to models.dev.

### How much does the GPT-5 Mini API cost?

Through OpenAI API, GPT-5 Mini costs $0.25 per million input tokens and $2 per million output tokens. Prices last verified 4 Oct 2026.

### Is GPT-5 Mini open source?

No. GPT-5 Mini is a proprietary model; OpenAI has not released its weights. It is available through APIs including OpenAI API, Azure AI Foundry, Databricks, OpenRouter.

### When was GPT-5 Mini released?

OpenAI released GPT-5 Mini on 7 Aug 2025, according to models.dev.

### Which providers offer GPT-5 Mini?

We track GPT-5 Mini on 6 providers: OpenAI API, Azure AI Foundry, Databricks, OpenRouter, Vercel AI Gateway, Snowflake Cortex.

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Data licensed CC BY 4.0. Cite as: AI Model Directory, "GPT-5 Mini", https://www.aimodel.directory/models/gpt-5-mini