Anthropic
Claude Sonnet 5.5 pricing and benchmarks
Anthropic’s fast mid-tier model, successor to Claude Sonnet 5 at the same price.
Input
$2.00
per 1M tokens
Cached input
$0.20
per 1M tokens
Output
$10.00
per 1M tokens
How capable is Claude Sonnet 5.5?
Epoch AI has not published capability scores for Claude Sonnet 5.5 yet. See benchmarks for rated models.
What Claude Sonnet 5.5 costs in practice
| Workload | Monthly cost |
|---|---|
Support chatbot 100,000 replies a month, ~1,500 input tokens (system prompt + history) and ~400 output tokens each. | $700.00 |
Document Q&A (RAG) 50,000 questions a month with ~8,000 tokens of retrieved context and ~600 output tokens each. | $1,100 |
Coding agent 10,000 agent steps a month, ~40,000 input tokens each (70% read from the prompt cache) and ~2,000 output tokens. | $496.00 |
Pricing details
- Cache writes cost $2.50 (5-minute cache) or $4 (1-hour cache) per 1M tokens.
- US-only inference (inference_geo: "us") costs 1.1x.
Estimate your Claude Sonnet 5.5 bill
- Claude Sonnet 5.5Anthropic$1,100/mo$0.02 / request
Standard-tier list prices. Long-context rates apply automatically where the provider publishes a threshold. Excludes cache-write surcharges, taxes, batch and volume discounts.