What is Gpt 5 4 Nano?
Gpt 5 4 Nano is a language model in the o10 fulfillment catalog (slug: openai-gpt-5-4-nano). Published input pricing starts at $0.200/1M tokens. Context window: 400K tokens.
Catalog snapshot 2026-06-27.
Gpt 5 4 Nano costs $0.200/1M input tokens and $1.25/1M output tokens as of 2026-06-27. Openai publishes this model with a 400K tokens context window. o10 lists Gpt 5 4 Nano on OpenRouter at routing band C0.
Last updated: 2026-06-27. Full catalog
Gpt 5 4 Nano — specs, hosts, and routing
AnswersSelf-contained
How much does Gpt 5 4 Nano cost per million tokens?
Gpt 5 4 Nano costs $0.200/1M input tokens and $1.25/1M 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 4 Nano?
Gpt 5 4 Nano is configured on OpenRouter. Each host maps to an upstream model ID listed in the fulfillment routes table. This model is routable through o10 eval-gated routing.
What is Gpt 5 4 Nano's context window?
Gpt 5 4 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 4 Nano?
Gpt 5 4 Nano 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 4 Nano?
Gpt 5 4 Nano is attributed to source provider openai in the o10 catalog. Fulfillment hosts (OpenRouter) supply API access; list pricing may differ by venue.
01Deep dive
Specifications
Gpt 5 4 Nano in the o10 unified catalog.
| Field | Value |
|---|---|
| o10 slug | `openai-gpt-5-4-nano` |
| Type | text |
| Band | C0 |
| Routable | Yes |
| Source provider | openai |
| Primary host | OpenRouter |
| Gateway ID | `openai/gpt-5.4-nano` |
| Context window | 400,000 tokens |
| Released | 2026-03-17 |
02Deep dive
Token pricing
Gateway snapshot pricing for Gpt 5 4 Nano.
| Unit | Price |
|---|---|
| Input | $0.2/1M tokens |
| Output | $1.25/1M tokens |
03Deep dive
Fulfillment hosts
Upstream venues configured for Gpt 5 4 Nano.
| Host | Upstream model ID |
|---|---|
| openrouter | openrouter/openai/gpt-5.4-nano |
04Deep dive
Gateway provider endpoints
Endpoint-level pricing and latency from the gateway catalog.
| Provider | Input ($/1M) | Latency p50 | Uptime 1d |
|---|---|---|---|
| azure | $0.2 | 453.5ms | 9957.4% |
| openai | $0.2 | 514ms | 9998.7% |
05Deep dive
Routing with o10
Eval-gated model selection for this slug.
o10 slug: openai-gpt-5-4-nano. Band: C0. Routable: yes.
See [/models/routing](/models/routing) for smart aliases (o10/auto, o10/economy) and [/kyi](/kyi) for governance.
SourceMethodology
Fulfillment catalog 2026-06-27. Gateway pricing joined where slug match exists.
FAQFrequently asked questions
Common questions
How much does Gpt 5 4 Nano cost?
Gpt 5 4 Nano costs $0.200/1M input tokens and $1.25/1M output tokens in the gateway snapshot (2026-06-27). Verify against your provider's published pricing.
What is Gpt 5 4 Nano's context window?
Gpt 5 4 Nano supports 400K tokens in the gateway catalog snapshot. Host-specific endpoints may differ.
Which hosts serve Gpt 5 4 Nano?
Gpt 5 4 Nano (openai-gpt-5-4-nano) is configured on: OpenRouter. Upstream model IDs are listed in the fulfillment routes section.
Is Gpt 5 4 Nano routable through o10?
Yes. Gpt 5 4 Nano is routable at band C0. Send model: "openai-gpt-5-4-nano" or use an o10 smart routing alias.
How do I call Gpt 5 4 Nano via o10?
Use o10 slug "openai-gpt-5-4-nano" or gateway ID "openai/gpt-5.4-nano" depending on your integration. Gateway-compatible endpoints accept OpenAI-style /v1 requests.
How does o10 route this model?
o10 routes Gpt 5 4 Nano 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.