Gpt 5 Nano. Price, context, and routing

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

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 Nano. Price, context, and routing

Gpt 5 Nano costs $0.050/1M input tokens and $0.400/1M output tokens as of 2026-06-27. Openrouter publishes this model with a 400K tokens context window. o10 lists Gpt 5 Nano on OpenAI at routing band C1. API slug gpt-5-nano. Verify list prices against the venue you call.

## Key takeaways

### What is Gpt 5 Nano?

Gpt 5 Nano is a chat model from openrouter (slug: gpt-5-nano). Pick Gpt 5 Nano for the cheapest OpenAI GPT-5 class calls. Use it for classification, extract, and short replies. Published input pricing starts at $0.050/1M tokens. Context window: 400K tokens.

*Catalog snapshot 2026-06-27.*

### When should you pick Gpt 5 Nano?

Pick Gpt 5 Nano for the cheapest OpenAI GPT-5 class calls. Use it for classification, extract, and short replies. Gpt 5 Nano is below GPT-5 mini. Escalate to mini or full GPT-5 when the task needs longer reasoning.

### How does Gpt 5 Nano differ from sibling models?

Gpt 5 Nano is below GPT-5 mini. Escalate to mini or full GPT-5 when the task needs longer reasoning.

### How much does Gpt 5 Nano cost per million tokens?

Gpt 5 Nano costs $0.050/1M input tokens and $0.400/1M 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 Nano?

Gpt 5 Nano is configured on OpenAI. Known host IDs: openai: openai/gpt-5-nano. This model is routable through o10 eval-gated routing.

### What is Gpt 5 Nano's context window?

Gpt 5 Nano 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 Nano?

Gpt 5 Nano 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 Nano?

Gpt 5 Nano is attributed to source provider openrouter in the o10 catalog. Fulfillment hosts (OpenAI) supply API access; list pricing may differ by venue.

## Citation
Gpt 5 Nano costs $0.050/1M input tokens and $0.400/1M output tokens as of 2026-06-27. Openrouter publishes this model with a 400K tokens context window. o10 lists Gpt 5 Nano on OpenAI at routing band C1. API slug gpt-5-nano. 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 Nano cost?

Gpt 5 Nano costs $0.050/1M input tokens and $0.400/1M output tokens in the gateway snapshot (2026-06-27). Verify against your provider's published pricing.

### What is Gpt 5 Nano's context window?

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

### Which hosts serve Gpt 5 Nano?

Gpt 5 Nano (gpt-5-nano) is configured on: OpenAI. Upstream model IDs are listed in the fulfillment routes section.

### Is Gpt 5 Nano routable through o10?

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

### How do I call Gpt 5 Nano via o10?

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

### How does o10 route this model?

o10 routes Gpt 5 Nano 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.

## Related links

- [Gpt 5 Nano HTML](https://www.o10.io/models/gpt-5-nano)
- [Gpt 5 Nano pricing](https://www.o10.io/pricing/openrouter/gpt-5-nano)
- [Model catalog](https://www.o10.io/models)
- [llms-models.txt](https://www.o10.io/llms-models.txt)

## Source URL

https://www.o10.io/models/gpt-5-nano