GPT-4o costs $2.50/1M input tokens and $10.00/1M output tokens as of 2026-06-27. OpenAI publishes this model with a 128K tokens context window. o10 lists GPT-4o on OpenRouter at routing band C2. API slug openai-gpt-4o. Verify list prices against the venue you call.

Last updated: 2026-06-27. Full catalog. Reference prices are dated snapshots. Compare total cost and measured task quality before choosing a route.

GPT-4o. Price, context, and routing

AnswersSelf-contained

What is GPT-4o?

GPT-4o is a chat model from openai (slug: openai-gpt-4o). Pick GPT-4o 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 $2.50/1M tokens. Context window: 128K tokens.

Catalog snapshot 2026-06-27.

When should you pick GPT-4o?

Pick GPT-4o 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-4o has cheaper mini/nano siblings for high-volume work. Pin the full SKU only when evals fail on the smaller tier.

How does GPT-4o differ from sibling models?

GPT-4o 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-4o cost per million tokens?

GPT-4o costs $2.50/1M 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-4o?

GPT-4o is configured on OpenRouter. Known host IDs: openrouter: openrouter/openai/gpt-4o. This model is routable through o10 eval-gated routing.

What is GPT-4o's context window?

GPT-4o supports a 128K tokens context window in the gateway catalog snapshot. Context limits may vary by fulfillment host endpoint.

What o10 routing band is GPT-4o?

GPT-4o is classified at o10 routing band C2. 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-4o?

GPT-4o 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-4o in the o10 unified catalog.

GPT-4o specifications
FieldValue
o10 slug`openai-gpt-4o`
Typetext
BandC2
RoutableYes
Source provideropenai
Primary hostOpenRouter
Gateway ID`openai/gpt-4o`
Context window128,000 tokens
Released2024-05-13
02Deep dive

Token pricing

Gateway snapshot pricing for GPT-4o.

GPT-4o token pricing
UnitPrice
Input$2.5/1M tokens
Output$10/1M tokens
03Deep dive

Fulfillment hosts

Upstream venues configured for GPT-4o.

GPT-4o fulfillment routes
HostUpstream model ID
openrouteropenrouter/openai/gpt-4o
04Deep dive

Gateway provider endpoints

Endpoint-level pricing and latency from the gateway catalog.

GPT-4o gateway endpoints
ProviderInput ($/1M)Latency p50Uptime 1d
azure$2.5353ms9999.2%
openai$2.5567ms9998.5%
05Deep dive

Routing with o10

Eval-gated model selection for this slug.

o10 slug: openai-gpt-4o. Band: C2. Routable: yes.

See [/models/routing](/models/routing) for smart aliases (o10/auto, o10/frontier, o10/squad) 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-4o cost?

GPT-4o costs $2.50/1M 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-4o's context window?

GPT-4o supports 128K tokens in the gateway catalog snapshot. Host-specific endpoints may differ.

Which hosts serve GPT-4o?

GPT-4o (openai-gpt-4o) is configured on: OpenRouter. Upstream model IDs are listed in the fulfillment routes section.

Is GPT-4o routable through o10?

Yes. GPT-4o is routable at band C2. Send model: "openai-gpt-4o" or use an o10 smart routing alias.

How do I call GPT-4o via o10?

Use o10 slug "openai-gpt-4o" or gateway ID "openai/gpt-4o" depending on your integration. Gateway-compatible endpoints accept OpenAI-style /v1 requests.

How does o10 route this model?

o10 routes GPT-4o only when per-use-case evals clear at your quality floor. Band C2 indicates cost tier. See /kyi for governance and /models/routing for smart aliases.

What is the API model ID for GPT-4o?

The o10 slug is "openai-gpt-4o"; the unified gateway ID is "openai/gpt-4o". Host IDs: openrouter: openrouter/openai/gpt-4o. Pricing snapshot date: 2026-06-27.

Who hosts GPT-4o?

GPT-4o is hosted as openrouter: openrouter/openai/gpt-4o. o10 maps those upstream IDs to slug "openai-gpt-4o".