Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
Tested on 17 benchmarks · BenchGecko score 64.4. Top scores: OTIS Mock AIME 2024-2025 (94.7%), Dtbench (87.5%), GPQA diamond (87.4%).
GPT-5.6 Luna scores 64.2 (100% as good) at $0.20/1M input · 90% cheaper
Unusual and adversarial machine learning challenges. Tests robustness of reasoning about edge cases in ML systems.
Deceptively simple questions that humans find easy but AI models often get wrong. Tests common sense and reasoning gaps.
Mock AIME (American Invitational Mathematics Exam) problems from OTIS. Tests mathematical competition performance.
- Typemultimodal
- Context1.0M tokens (~500 books)
- ReleasedJun 2026
- LicenseProprietary
- StatusActive
- Cost / Message~$0.014
Frequently Asked Questions
Key facts · as of 2026-10-16
- Claude Sonnet 5 by Anthropic. BenchGecko score 64.4, rank 59 of 319 scored models (normalized average of public benchmark scores).
- List price $2.00 input · $10.00 output per 1M tokens (as of 2026-10-16).
- Sold by 10 providers (as of 2026-10-16): Amazon Bedrock $2.00 in / $10.00 out · Anthropic $2.00 in / $10.00 out · Azure $2.00 in / $10.00 out · Claude Platform on AWS $2.00 in / $10.00 out · Google $2.00 in / $10.00 out · and 5 more. Every provider
How to cite · data as of 2026-10-16
Claude Sonnet 5 · benchmarks, pricing and providers. BenchGecko, data as of 2026-10-16. https://benchgecko.ai/model/claude-sonnet-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