How much does o3 Pro cost?

o3 Pro costs $20.00/M input tokens and $80.00/M output tokens, with separate rates for Web Search at $10.00/1K calls.

What is the context length of o3 Pro?

o3 Pro has a 200,000 token context window. It supports up to 100,000 completion tokens.

Does o3 Pro support tool calling and structured outputs?

Yes. o3 Pro accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.

What inputs and outputs does o3 Pro support?

o3 Pro accepts text, files such as PDFs, and images as input and returns text.

Which providers serve o3 Pro?

o3 Pro is served by 1 provider on OpenRouter: OpenAI.

What other text models does OpenAI have?

GPT-6.1 Terra Pro, GPT-6.1 Terra, GPT-6 Luna Decisions and 58 more are other text models from OpenAI.

When was o3 Pro released?

o3 Pro was released on June 10, 2025. Its knowledge cutoff is June 30, 2024.

OpenAI: o3 Pro

Going away December 11, 2026

openai/o3-pro

Compare

The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and provide consistently better answers.

Note that BYOK is required for this model. Set up here: https://openrouter.ai/settings/integrations

Modalities

In / out price

$20 / $80per 1M

Context

200K

Released

Jun 10, 2025

Knowledge cutoff

Jun 2024

Providers

This model is hosted by one provider. OpenRouter forwards every request without routing.

Latency / throughput


	$20.00	$80.00	5.80s	16 tok/s	100.00%

Input $20.00Output $80.00
16 tok/s100.00% uptime

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Weighted average

Input

$20/M tokens

Output

$80/M tokens

o3 Pro — Price history

Price history

No effective price data for this selection

		$20.00	$80.00	0.0%	100.0%

Effective in $20.00Effective out $80.00
Token share
100.0%

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Uptime (3d)

100.00%

Availability (3d)

99.41%

Availability over the last 3 days

Last 72 hours

Availability 99.41%

3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability

99.11%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and provider routing options.

Benchmarks

Scores on standardized evaluations and this model’s own outputs on shared benchmark prompts. Higher percentages are better — and each rank shows where this model lands among the models evaluated on that source.

Benchmark score summary for OpenAI: o3 Pro (Artificial Analysis)
Source	Benchmark	Score
Artificial Analysis	o3-pro GPQA Diamond	84.5%

Not currently available through EU in-region routing. In-region routing docs

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GPT Image 2.6 Flare

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GPT-6.1 Terra Pro

GPT-6.1 Terra Pro is the same underlying model as GPT-6.1 Terra, served with reasoning.mode set to pro for higher-quality responses on complex tasks.

Cost note: pro mode spends far more reasoning tokens per request, so a typical request costs several times more than the same request on GPT-6.1 Terra and takes much longer to complete. It is intended for hard, high-stakes problems where the extra accuracy justifies the cost. For everyday coding, agentic, and chat workloads, use GPT-6.1 Terra instead.

Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

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GPT-6 Luna Decisions

GPT-6 Luna Decisions is GPT-6 Luna served through OpenAI's Decisions API. Instead of generating text, it reads the content passed as state (text, JSON, or images) and returns typed, probabilistic answers to named questions in a single request: the probability of yes for a yes/no question (noul), a probability for every option plus the most likely one (choice), or a probability for every level of an ordered rubric plus the expected score (score).

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Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

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GPT-6 Luna Pro

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Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

Text1.1M context$0.10 / $0.50

GPT-6 Luna Pro (batch)

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Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

Text1.1M context$0.05 / $0.25

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GPT Astra Latest

This model always redirects to the latest model in the GPT Astra family.

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OpenAI: o3 Pro

Providers