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

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. Price, context, and routing

GPT-5 costs $1.25/1M input tokens and $10.00/1M output tokens as of 2026-06-27. OpenAI publishes this model with a 400K tokens context window. o10 lists GPT-5 on OpenRouter at routing band C1. API slug openai-gpt-5. Verify list prices against the venue you call.

## Key takeaways

### What is GPT-5?

GPT-5 is a chat model from openai (slug: openai-gpt-5). Pick GPT-5 when you need OpenAI's general chat/vision family at this generation. It is the named GPT SKU, not a reasoning-only o-series model. Published input pricing starts at $1.25/1M tokens. Context window: 400K tokens.

*Catalog snapshot 2026-06-27.*

### When should you pick GPT-5?

Pick GPT-5 when you need OpenAI's general chat/vision family at this generation. It is the named GPT SKU, not a reasoning-only o-series model. GPT-5 has cheaper mini/nano siblings for high-volume work. Pin the full SKU only when evals fail on the smaller tier.

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

GPT-5 has cheaper mini/nano siblings for high-volume work. Pin the full SKU only when evals fail on the smaller tier.

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

GPT-5 costs $1.25/1M input tokens and $10.00/1M 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?

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

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

GPT-5 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?

GPT-5 is classified at o10 routing band C1. 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?

GPT-5 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 costs $1.25/1M input tokens and $10.00/1M output tokens as of 2026-06-27. OpenAI publishes this model with a 400K tokens context window. o10 lists GPT-5 on OpenRouter at routing band C1. API slug openai-gpt-5. 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 cost?

GPT-5 costs $1.25/1M input tokens and $10.00/1M output tokens in the gateway snapshot (2026-06-27). Verify against your provider's published pricing.

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

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

### Which hosts serve GPT-5?

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

### Is GPT-5 routable through o10?

Yes. GPT-5 is routable at band C1. Send model: "openai-gpt-5" or use an o10 smart routing alias.

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

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

### How does o10 route this model?

o10 routes GPT-5 only when per-use-case evals clear at your quality floor. Band C1 indicates cost tier. See /kyi for governance and /models/routing for smart aliases.

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

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

### Who hosts GPT-5?

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

## Related links

- [GPT-5 HTML](https://www.o10.io/models/openai-gpt-5)
- [GPT-5 pricing](https://www.o10.io/pricing/openai/openai-gpt-5)
- [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