O3 Pro costs $20.00/1M input tokens and $80.00/1M output tokens as of 2026-06-27. OpenAI publishes this model with a 200K tokens context window. o10 lists O3 Pro on OpenRouter at routing band C3. API slug openai-o3-pro. 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.

O3 Pro. Price, context, and routing

AnswersSelf-contained

What is O3 Pro?

O3 Pro is a chat model from openai (slug: openai-o3-pro). Pick O3 Pro for multi-step reasoning jobs, not as a cheap chat default. o-series models spend more output tokens. Published input pricing starts at $20.00/1M tokens. Context window: 200K tokens.

Catalog snapshot 2026-06-27.

When should you pick O3 Pro?

Pick O3 Pro for multi-step reasoning jobs, not as a cheap chat default. o-series models spend more output tokens. O3 Pro is a reasoning SKU. Prefer GPT-4o or GPT-5 mini for ordinary chat unless evals require the o-series.

How does O3 Pro differ from sibling models?

O3 Pro is a reasoning SKU. Prefer GPT-4o or GPT-5 mini for ordinary chat unless evals require the o-series.

How much does O3 Pro cost per million tokens?

O3 Pro costs $20.00/1M input tokens and $80.00/1M 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 O3 Pro?

O3 Pro is configured on OpenRouter. Known host IDs: openrouter: openrouter/openai/o3-pro. This model is routable through o10 eval-gated routing.

What is O3 Pro's context window?

O3 Pro supports a 200K tokens context window in the gateway catalog snapshot. Context limits may vary by fulfillment host endpoint.

What o10 routing band is O3 Pro?

O3 Pro is classified at o10 routing band C3. 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 O3 Pro?

O3 Pro 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

O3 Pro in the o10 unified catalog.

O3 Pro specifications
FieldValue
o10 slug`openai-o3-pro`
Typetext
BandC3
RoutableYes
Source provideropenai
Primary hostOpenRouter
Gateway ID`openai/o3-pro`
Context window200,000 tokens
Released2025-04-16
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Token pricing

Gateway snapshot pricing for O3 Pro.

O3 Pro token pricing
UnitPrice
Input$20/1M tokens
Output$80/1M tokens
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Fulfillment hosts

Upstream venues configured for O3 Pro.

O3 Pro fulfillment routes
HostUpstream model ID
openrouteropenrouter/openai/o3-pro
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Gateway provider endpoints

Endpoint-level pricing and latency from the gateway catalog.

O3 Pro gateway endpoints
ProviderInput ($/1M)Latency p50Uptime 1d
openai$203992ms9984.1%
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Routing with o10

Eval-gated model selection for this slug.

o10 slug: openai-o3-pro. Band: C3. 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 O3 Pro cost?

O3 Pro costs $20.00/1M input tokens and $80.00/1M output tokens in the gateway snapshot (2026-06-27). Verify against your provider's published pricing.

What is O3 Pro's context window?

O3 Pro supports 200K tokens in the gateway catalog snapshot. Host-specific endpoints may differ.

Which hosts serve O3 Pro?

O3 Pro (openai-o3-pro) is configured on: OpenRouter. Upstream model IDs are listed in the fulfillment routes section.

Is O3 Pro routable through o10?

Yes. O3 Pro is routable at band C3. Send model: "openai-o3-pro" or use an o10 smart routing alias.

How do I call O3 Pro via o10?

Use o10 slug "openai-o3-pro" or gateway ID "openai/o3-pro" depending on your integration. Gateway-compatible endpoints accept OpenAI-style /v1 requests.

How does o10 route this model?

o10 routes O3 Pro only when per-use-case evals clear at your quality floor. Band C3 indicates cost tier. See /kyi for governance and /models/routing for smart aliases.