Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
Tested on 42 benchmarks · BenchGecko score 58.3. Top scores: Chatbot Arena Elo — Overall (1469.8%), Chatbot Arena Elo — Coding (1468.5%), OTIS Mock AIME 2024-2025 (86.1%).
Kimi K2 Thinking scores 58.2 (100% as good) at $0.60/1M input · 88% cheaper
Capture-the-flag cybersecurity challenges. Tests vulnerability analysis, reverse engineering, cryptography, and exploitation skills.
Real-world software engineering tasks from GitHub issues. Models must diagnose bugs and write patches that pass test suites. Human-verified subset of SWE-bench.
SWE-bench Verified solved using only bash commands, no specialized frameworks. Tests raw terminal-based problem solving.
Abstraction and Reasoning Corpus. Tests fluid intelligence through novel visual pattern recognition puzzles. Core measure of general intelligence.
Deceptively simple questions that humans find easy but AI models often get wrong. Tests common sense and reasoning gaps.
ARC-AGI 2, harder sequel to ARC. More complex abstract reasoning patterns that test generalization ability beyond training data.
Mock AIME (American Invitational Mathematics Exam) problems from OTIS. Tests mathematical competition performance.
Original research-level math problems created by professional mathematicians. Problems are unpublished and cannot be memorized.
- Typemultimodal
- Context200K tokens (~100 books)
- ReleasedNov 2025
- LicenseProprietary
- StatusActive
- Cost / Message~$0.035
Frequently Asked Questions
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- Claude Opus 4.5 by Anthropic. BenchGecko score 58.3, rank 104 of 319 scored models (normalized average of public benchmark scores).
- List price $5.00 input · $25.00 output per 1M tokens (as of 2026-10-16).
- Sold by 6 providers (as of 2026-10-16): Amazon Bedrock $5.00 in / $25.00 out · Anthropic $5.00 in / $25.00 out · Azure $5.00 in / $25.00 out · Claude Platform on AWS $5.00 in / $25.00 out · Google $5.00 in / $25.00 out · and 1 more. Every provider
How to cite · data as of 2026-10-16
Claude Opus 4.5 · benchmarks, pricing and providers. BenchGecko, data as of 2026-10-16. https://benchgecko.ai/model/claude-opus-4-5
Credit "Source: BenchGecko" with a link. Prices per provider and Gecko Tests are BenchGecko data (CC BY 4.0); benchmark scores keep their original source, listed in the JSON. JSON · llms.txt · MCP