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o1

O-series reasoning model for hard analysis, math, coding, and planning

Source-linked o Closed weights Released 2024-12-05
API data Report
Input modalitiesT
Output modalitiesT
Input price$15/1M tokens
Output price$60/1M tokens
Context window200K
Max output100K
Overview

Capabilities and specifications

Reasoning Yes
Tool calling Yes
? Structured output Unknown
Attachments Yes
Vision input Yes
× Open weights No
Creator
OpenAI
Model family
o
Knowledge cutoff
2023-09
License
Not documented
Release date
2024-12-05
Model ID
openai/o1
Inference availability

Provider pricing and availability

Provider-specific identifiers, limits, and prices per million tokens.

Report a price
Providers offering o1
ProviderProvider model IDContextInputOutputCache readCapabilitiesSource
GitHub Models openai/o1 200K Not listed Not listed - Reasoning Docs
Poe openai/o1 200K $14 $54 - ReasoningTools Docs
NanoGPT openai/o1 200K $14.994 $59.993 - Reasoning Docs
Vercel AI Gateway openai/o1 200K $15 $60 $7.5 ReasoningToolsJSON Docs
DigitalOcean openai-o1 200K $15 $60 $7.5 ReasoningToolsJSON Docs
OpenAI o1 200K $15 $60 $7.5 ReasoningToolsJSON Docs
Merge Gateway openai/o1 200K $15 $60 $7.5 ReasoningToolsJSON Docs
LLM Gateway o1 200K $15 $60 $7.5 ReasoningToolsJSON Docs
Cloudflare AI Gateway openai/o1 200K $15 $60 $7.5 ReasoningToolsJSON Docs
Azure o1 200K $15 $60 $7.5 ReasoningTools Docs
Kilo Gateway openai/o1 200K $15 $60 $7.5 Tools Docs
OpenRouter openai/o1 200K $15 $60 $7.5 ReasoningToolsJSON Docs
Azure Cognitive Services o1 200K $15 $60 $7.5 ReasoningTools Docs

Capability badges appear only when the provider catalog explicitly lists support.

Serving quality

Performance and reliability

Observed serving measurements stay separate from model specifications and are never estimated from price or model size.

Throughput Not reported

Generation speed; higher is faster.

Latency / TTFT Not reported

Time until the first output token arrives.

Uptime Not reported

Successful requests over a measured period.

Performance varies by inference provider, region, and load. Provider-level measurements appear only when a source reports them.

Published evaluations

Benchmarks

Raw results remain attached to their original source and version.

Benchmark registry
Aider Polyglot - Unversioned - percent correctTop 8 reported models
GPT-5
88.0
o3-pro
84.9
Gemini 2.5 Pro
83.1
o3
81.3
DeepSeek Reasoner
74.2
Claude Opus 4
72.0
Claude Opus 4 (latest)
72.0
o1
61.7
Coding Index - Unversioned - indexTop 8 reported models
Claude Opus 5
78.0
GPT-5.6 Sol
77.4
GPT-5.6 Terra
76.7
Anthropic: Claude Fable 5 (batch)
76.5
Claude Fable 5
76.5
Kimi K3
76.2
OpenAI: GPT-5.5 (batch)
74.9
o1
39.7
Catalog activity

Recent record changes

Detected changes from successful source imports.

Full change log
No recent changes detected

This record has not changed in the retained import history.

Public API

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Fetch the complete source-linked model record without an API key.

API documentation
Endpoint
GET https://www.modelbench.lol/api/v1/models/openai/o1
curl
curl "https://www.modelbench.lol/api/v1/models/openai/o1"