Claude Sonnet 5.5

ANTHROPIC Developer Architecture Profile

OpenRouter ↗HuggingFace ↗

Intelligence (ELO)1603Chatbot Arena Verified

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

Prompt Caching90% OFF$0.20 / 1M cached

Standard API / 1M$12.00Blended Standard Rate

Model Capabilities & Contract SLAs

Fictional
Reasoning
Agentic
Top Tier
Coding & Logic
📋 Strict JSON Schema
🛠️ Native Tool Calling

Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...

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 5.5 vs SpaceXAI: Grok 4.7 VS Engine MatchupClaude Sonnet 5.5 vs Anthropic: Claude Sonnet 5.5 (batch)VS Engine MatchupClaude Sonnet 5.5 vs SpaceXAI: Grok 4.6 VS Engine MatchupClaude Sonnet 5.5 vs DeepSeek: DeepSeek V4 Pro 0813 VS Engine MatchupClaude Sonnet 5.5 vs DeepSeek: DeepSeek V4 Pro 0423 VS Engine MatchupClaude Sonnet 5.5 vs Fireworks: Ember-1