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GPT-5 mini. Price, context, and routing

Source page: https://www.o10.io/models/openai-gpt-5-mini

Plain-text reference for reading, copying, and citation. Examples are illustrative; use your own credentials for API requests.

Model data: https://www.o10.io/api/models.json
Content index: https://www.o10.io/llms.txt
Prices are dated references, not live quotes. Check the current endpoint rate before use.

# GPT-5 mini. Price, context, and routing

GPT-5 mini costs $0.250/1M input tokens and $2.00/1M output tokens as of 2026-06-27. OpenAI publishes this model with a 400K tokens context window. o10 lists GPT-5 mini on OpenRouter at routing band C0. API slug openai-gpt-5-mini. Verify list prices against the venue you call.

## Key takeaways

### What is GPT-5 mini?

GPT-5 mini is a chat model from openai (slug: openai-gpt-5-mini). Pick GPT-5 mini as the cheap OpenAI default for high-volume chat. It is the cost-cut sibling of the matching full GPT SKU. Published input pricing starts at $0.250/1M tokens. Context window: 400K tokens.

*Catalog snapshot 2026-06-27.*

### When should you pick GPT-5 mini?

Pick GPT-5 mini as the cheap OpenAI default for high-volume chat. It is the cost-cut sibling of the matching full GPT SKU. GPT-5 mini trades some reasoning depth for price. Promote to the full GPT SKU when quality floor evals fail.

### How does GPT-5 mini differ from sibling models?

GPT-5 mini trades some reasoning depth for price. Promote to the full GPT SKU when quality floor evals fail.

### How much does GPT-5 mini cost per million tokens?

GPT-5 mini costs $0.250/1M input tokens and $2.00/1M output tokens in the gateway catalog snapshot (2026-06-27). Endpoint pricing may differ by fulfillment host.

*Sourced from gateway catalog snapshot.*

### Where can you run GPT-5 mini?

GPT-5 mini is configured on OpenRouter. Known host IDs: openrouter: openrouter/openai/gpt-5-mini. This model is routable through o10 eval-gated routing.

### What is GPT-5 mini's context window?

GPT-5 mini supports a 400K tokens context window in the gateway catalog snapshot. Context limits may vary by fulfillment host endpoint.

### What o10 routing band is GPT-5 mini?

GPT-5 mini is classified at o10 routing band C0. Bands group models by cost tier and eval profile: C0 (economy), C1 (standard), C2 (capable), C3/C4 (frontier). Production routing is enabled for this slug.

### Who makes GPT-5 mini?

GPT-5 mini is attributed to source provider openai in the o10 catalog. Fulfillment hosts (OpenRouter) supply API access; list pricing may differ by venue.

## Citation
GPT-5 mini costs $0.250/1M input tokens and $2.00/1M output tokens as of 2026-06-27. OpenAI publishes this model with a 400K tokens context window. o10 lists GPT-5 mini on OpenRouter at routing band C0. API slug openai-gpt-5-mini. Verify list prices against the venue you call.
## Methodology

Fulfillment catalog 2026-06-27. Gateway pricing joined where slug match exists.

## FAQ

### How much does GPT-5 mini cost?

GPT-5 mini costs $0.250/1M input tokens and $2.00/1M output tokens in the gateway snapshot (2026-06-27). Verify against your provider's published pricing.

### What is GPT-5 mini's context window?

GPT-5 mini supports 400K tokens in the gateway catalog snapshot. Host-specific endpoints may differ.

### Which hosts serve GPT-5 mini?

GPT-5 mini (openai-gpt-5-mini) is configured on: OpenRouter. Upstream model IDs are listed in the fulfillment routes section.

### Is GPT-5 mini routable through o10?

Yes. GPT-5 mini is routable at band C0. Send model: "openai-gpt-5-mini" or use an o10 smart routing alias.

### How do I call GPT-5 mini via o10?

Use o10 slug "openai-gpt-5-mini" or gateway ID "openai/gpt-5-mini" depending on your integration. Gateway-compatible endpoints accept OpenAI-style /v1 requests.

### How does o10 route this model?

o10 routes GPT-5 mini only when per-use-case evals clear at your quality floor. Band C0 indicates cost tier. See /kyi for governance and /models/routing for smart aliases.

### What is the API model ID for GPT-5 mini?

The o10 slug is "openai-gpt-5-mini"; the unified gateway ID is "openai/gpt-5-mini". Host IDs: openrouter: openrouter/openai/gpt-5-mini. Pricing snapshot date: 2026-06-27.

### Who hosts GPT-5 mini?

GPT-5 mini is hosted as openrouter: openrouter/openai/gpt-5-mini. o10 maps those upstream IDs to slug "openai-gpt-5-mini".

## Related links

- [GPT-5 mini HTML](https://www.o10.io/models/openai-gpt-5-mini)
- [GPT-5 mini pricing](https://www.o10.io/pricing/openai/openai-gpt-5-mini)
- [Model catalog](https://www.o10.io/models)
- [llms-models.txt](https://www.o10.io/llms-models.txt)

## Source URL

https://www.o10.io/models/openai-gpt-5-mini