All models
OpenAI

o3

frontier

OpenAI

OpenAI's most powerful reasoning model. Excels at science, math, coding, and complex multi-step problems through deep chain-of-thought reasoning.

Official page
reasoningsciencemathcoding
Context
200K
Input / 1M
$2.00
Output / 1M
$8.00
Knowledge cutoff
2024-06

Capabilities

Code5/5
Reasoning5/5
Multilingual4/5
Safety4/5
Speed2/5

Modalities & Features

Vision (image input) Yes
Audio No
Video No
Function / tool calling Yes
JSON mode Yes
Extended thinking Yes

Context & Output

Context window200K
Max output tokens100K
Knowledge cutoff2024-06
Release date2025-04

API & Access

Open source No
Streaming Yes
Batch API Yes
Prompt caching No
Fine-tuning No

Benchmarks

MMLUGeneral knowledge
91.4%
GPQA DiamondHard science Q&A
87.7%
MATHMath problem solving
96.7%
AIME 2025Advanced math
96.7%
GSM8KGrade-school math
97.2%
HumanEvalCode generation
92.8%
LiveCodeBenchLive coding problems
N/A
SWE-bench VerifiedReal-world software
69.1%
HellaSwagCommonsense inference
N/A

Source: provider technical reports & independent evaluations. N/A = not yet published for this model.

Pricing (per 1M tokens)

Input$2.00
Output$8.00
Consumer plan
ChatGPT Pro
$200/mo
Prices shown are list prices and may vary by provider plan. Always check official documentation for the latest pricing.