Claude Sonnet 5

ANTHROPIC Developer Architecture Profile

OpenRouter ↗HuggingFace ↗

Intelligence (ELO)1438Chatbot Arena Verified

Max Context Limit1,000,000Max Out: 128,000 tokens

Prompt Caching90% OFF$0.20 / 1M cached

Standard API / 1M$12.00🧠 Deep Reasoner

Model Capabilities & Contract SLAs

Fictional
Reasoning
Agentic
Coding & Logic
📋 Strict JSON Schema
🛠️ Native Tool Calling
🧠 Extended Test-Time Reasoning

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,...

Granular Pricing Matrix

Input Tokens (Standard Prompt)$2.00 / 1M

⚡ Cached Input (Prompt Cache Read)90% OFF$0.20 / 1M

Output Tokens (Completion)$10.00 / 1M

Pricing data via OpenRouter. Sync: 10/2/2026

Evaluate Competitors

VS Engine MatchupClaude Sonnet 5 vs inclusionAI: Ling 3.0 Flash Sante (free)VS Engine MatchupClaude Sonnet 5 vs ByteDance Seed: Seed-2.0-Code VS Engine MatchupClaude Sonnet 5 vs Upstage: Solar Pro 4 VS Engine MatchupClaude Sonnet 5 vs Qwen: Qwen3.7 Flash VS Engine MatchupClaude Sonnet 5 vs Tencent: Hy3 VS Engine MatchupClaude Sonnet 5 vs Qwen: Qwen3.6 Flash