o3 specs, prices, where it runs and its benchmark standing

Name: o3
Author: OpenAI

closed weights · top 10 on 2 of 11 · released Apr 16, 2025

Provider: OpenAI
Release date: Apr 16, 2025; Boards
Parameters: Not disclosed by OpenAI
Modalities: Text, Image, Files to Text; OpenRouter
License: Proprietary; LMArena
Context window: 200K tokens; Pricing
Pricing: $2 in / $8 out per 1M tokens; All prices
Hosting: 1 priced API route · Azure OpenAI (26 regions) · OpenRouter; Pricing Regions
Weights: Closed weights
Benchmarks: 11 boards captured

Rank	Board	Category	Score	Of
20	HLEReasoning · as “o3 (high) (April 2025)”	Reasoning	20.3%	44
20	Search ArenaAgents and tools · as “o3 (Search)”	Agents and tools	1,197	40
22	MultiChallengeChat · as “o3-2025-04-16-reasoning-high”	Chat	56.6%	35
60	ARC-AGI-2Reasoning · as “o3 (High)”	Reasoning	6.5%	92
70	Vision ArenaVision · as “o3 (2025-04-16)”	Vision	1,216	85
77	Epoch ECIReasoning · as “o3”	Reasoning	147.0	100
89	GPQA DiamondReasoning · as “o3-2025-04-16_high”	Reasoning	81.8%	100
4	Aider PolyglotCoding · stale since 2025-10-03 · as “o3 (high)”	Coding	81.3%	50
7	BFCLAgents and tools · stale since 2026-04-12 · as “o3-2025-04-16 (Prompt)”	Agents and tools	63.0%	81
21	SWE-bench VerifiedCoding · stale since 2026-02-26 · as “o3 (2025-04-16)”	Coding	58.4%	39
33	MMLU-ProReasoning · stale since 2026-03-11 · as “GPT-o3-high”	Reasoning	85.0%	100