Claude Opus 4.5 specs, prices, where it runs and its benchmark standing

Name: Claude Opus 4.5
Author: Anthropic

closed weights · #1 on 2 boards · top 10 on 2 of 14 · released Nov 24, 2025

Provider: Anthropic
Release date: Nov 24, 2025; Boards
Parameters: Not disclosed by Anthropic
Modalities: Text, Image, Files to Text; OpenRouter
License: Proprietary; LMArena
Context window: 200K tokens; Pricing
Pricing: $5 in / $25 out per 1M tokens; All prices
Hosting: 6 priced API routes · AWS Bedrock (33 regions) · OpenRouter; Pricing Regions
Weights: Closed weights
Benchmarks: 14 boards captured

Rank	Board	Category	Score	Of
16	HLEReasoning · as “claude-opus-4-5-20251101-thinking”	Reasoning	25.2%	44
18	MultiChallengeChat · as “claude-opus-4-5-20251101-thinking”	Chat	59.0%	35
18	Document ArenaVision · as “Claude Opus 4.5 (20251101)”	Vision	1,468	40
25	MCP AtlasAgents and tools · as “claude-opus-4-5 (high)”	Agents and tools	69.8%	37
29	Search ArenaAgents and tools · as “Claude Opus 4.5 (Search)”	Agents and tools	1,186	40
36	Text ArenaChat · as “Claude Opus 4.5 (High, 32K, 20251101)”	Chat	1,474	84
45	ARC-AGI-2Reasoning · as “Opus 4.5 (Thinking, 64K)”	Reasoning	37.6%	92
46	LiveBenchReasoning · as “claude-opus-4-5-20251101-thinking-64k-high-effort”	Reasoning	72.6%	64
55	Epoch ECIReasoning · as “Claude Opus 4.5”	Reasoning	151.8	100
59	WebDev ArenaCoding · as “Claude Opus 4.5 (High, 32K, 20251101)”	Coding	1,494	82
72	GPQA DiamondReasoning · as “claude-opus-4-5-20251101_32K”	Reasoning	86.0%	100
1	SWE-bench VerifiedCoding · stale since 2026-02-26 · as “Claude 4.5 Opus (high)”	Coding	76.8%	39
1	BFCLAgents and tools · stale since 2026-04-12 · as “Claude-Opus-4-5-20251101 (FC)”	Agents and tools	77.5%	81
12	MMLU-ProReasoning · stale since 2026-03-11 · as “Claude-4.5-Opus(Thinking)”	Reasoning	87.3%	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