OpenAI · Released Mar 19, 2025

o1-pro

The o1 series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o1-pro model uses more compute to think harder and provide...

ReasoningVision
Released
Mar 19 2025
Context window
200K 100K out
Input / 1M tokens
$150.00
Output / 1M tokens
$600.00

Where to run it

Providers

Only OpenAI serves o1-pro on OpenRouter right now.

ProviderInputOutputContextMax outputvs. best
OpenAIno tool calling $150.00 $600.00 200K100K Cheapest

Value

Price vs. performance

24 models score higher for the same price or lesson Humanity's Last Exam, e.g. GPT-6 Astra.
2.7%20.1%37.4%54.8% $0.10$1.00$10.00$100.00$1000.00 Claude Haiku 5.5 (Anthropic) — 30.1% · $0.10/1M in Claude Sonnet 5.5 (Anthropic) — 46.1% · $2.00/1M in Gemini 3.8 Flash (Google) — 44.5% · $0.82/1M in Claude Fable 5.1 (Anthropic) — 46.5% · $10.00/1M in Gemini 3.1 Flash Lite (Google) — 8.6% · $0.25/1M in Claude Opus 4.7 (Anthropic) — 36.2% · $5.00/1M in Gemini 3.1 Flash Lite Preview (Google) — 8.6% · $0.25/1M in Gemini 3.1 Pro Preview (Google) — 46.4% · $2.00/1M in Claude Opus 4.6 (Anthropic) — 34.4% · $5.00/1M in Kimi K2.5 (Moonshot AI) — 24.4% · $0.50/1M in Claude Opus 4.5 (Anthropic) — 25.2% · $5.00/1M in Claude Sonnet 4.5 (Anthropic) — 13.7% · $3.00/1M in Claude Opus 4.1 (Anthropic) — 11.5% · $15.00/1M in GLM 4.5 (Z.ai) — 8.3% · $0.60/1M in GLM 4.5 Air (Z.ai) — 8.1% · $0.13/1M in GPT-6 Astra (OpenAI) — 54.8% · $10.00/1M in GPT-5.4 Pro (OpenAI) — 44.3% · $30.00/1M in GPT-5.4 (OpenAI) — 36.2% · $2.50/1M in GPT-5.2 (OpenAI) — 27.8% · $1.75/1M in GPT-5.1 (OpenAI) — 23.7% · $1.25/1M in GPT-5 Pro (OpenAI) — 31.6% · $15.00/1M in GPT-5 (OpenAI) — 25.3% · $1.25/1M in GPT-5 Mini (OpenAI) — 19.4% · $0.25/1M in o3 (OpenAI) — 20.3% · $2.00/1M in o4 Mini (OpenAI) — 18.1% · $1.10/1M in GPT-4.1 (OpenAI) — 5.4% · $2.00/1M in o1 (OpenAI) — 8.0% · $15.00/1M in GPT-4o (2024-11-20) (OpenAI) — 2.7% · $2.50/1M in GPT-4o (2024-08-06) (OpenAI) — 2.7% · $2.50/1M in GPT-4o (OpenAI) — 2.7% · $2.50/1M in GPT-4o (2024-05-13) (OpenAI) — 2.7% · $5.00/1M in o1-pro (OpenAI) — 8.1% · $150.00/1M in o1-pro

o1-pro Other OpenAI Other labs Value frontier · Humanity's Last Exam vs. input price per 1M tokens (log scale) · Drag to pan, pinch or Ctrl + scroll to zoom, double-click to zoom in.

Benchmarks

2 benchmark scores

BenchmarkScoreRankLeader
Humanity's Last ExamReasoning & knowledge · Expert questions across 100+ subjects 8.1% #25of 32 GPT-6 Astra54.8%
ARC-AGI-1Reasoning & knowledge · Pattern induction from input–output examples 23.3% #66of 75 Gemini 4 Argon98.5%

Specs

Details

Model ID
openai/o1-pro
Developer
OpenAI
Release date
Mar 19, 2025 ·
Context window
200,000 tokens
Max output
100,000 tokens
API price
$150.00 / $600.00 per 1M input / output tokens
Providers
1
Input types
text, image, file
Reasoning
Yes
Tool calling
No
Open weights
No
Free tier
No

Release date, prices and providers from OpenRouter's catalog; buying directly from a provider can cost a little differently. Uptime is the share of OpenRouter requests each provider served over the last day. Benchmark scores are the best result per benchmark from Epoch AI, licensed CC BY 4.0. Rank counts every model tracked here with a score.