Claude Opus 4.1 specs, prices, where it runs and its benchmark standing

Name: Claude Opus 4.1
Author: Anthropic

closed weights · top 10 on 0 of 6 · released Aug 5, 2025

Provider: Anthropic
Release date: Aug 5, 2025; Boards
Parameters: Not disclosed by Anthropic
Modalities: Text, Image, Files to Text; OpenRouter
License: Proprietary; LMArena
Context window: 200K tokens; Pricing
Pricing: $15 in / $75 out per 1M tokens; All prices
Hosting: 2 priced API routes · AWS Bedrock (3 regions) · OpenRouter; Pricing Regions
Weights: Closed weights
Benchmarks: 6 boards captured

Rank	Board	Category	Score	Of
20	MultiChallengeChat · as “claude-opus-4-1-20250805-thinking”	Chat	57.2%	35
25	HLEReasoning · as “claude-opus-4-1-20250805-thinking”	Reasoning	11.5%	44
32	Search ArenaAgents and tools · as “Claude Opus 4.1 (Search)”	Agents and tools	1,167	40
67	Text ArenaChat · as “Claude Opus 4.1 (Thinking 16K, 20250805)”	Chat	1,450	84
89	Epoch ECIReasoning · as “Claude Opus 4.1”	Reasoning	144.7	100
98	GPQA DiamondReasoning · as “claude-opus-4-1-20250805_16K”	Reasoning	77.3%	100

Versions and release history

9 versions in this line since May 14, 2025, from Pricing, OpenRouter and the boards.

Category ranks, more models and catalog changes