Claude Sonnet 5.5 Pricing & Token Economics
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade.
Normalized Token Pricing Matrix
Real-time input, completion, and cache rates normalized to $/1M tokens.
Cost for prompts, instructions, document retrieval, and system context sent into the model.
Cost for generated text, code, tool calls, and structured JSON responses returned by the model.
Massive 90% savings on repeated context, documents, and system instructions.
Standard industry benchmark assuming 75% prompt reads and 25% completion generation.
Claude Sonnet 5.5 Monthly Bill Estimator
Estimated monthly costs across four standardized enterprise and developer workloads.
| Workload Scenario | Monthly Token Volume | Standard Bill | With Prompt Caching |
|---|---|---|---|
| Customer Support Chatbot 10M prompt tokens + 2.5M output tokens per month | 12.5M tokens (10M in / 2.5M out) | $45.00/mo | $32.40/mo -28% |
| Document Analysis & RAG 30M prompt tokens (PDFs/context) + 3M output summaries | 33.0M tokens (30M in / 3M out) | $90.00/mo | $52.20/mo -42% |
| Coding Agent / IDE Swarm 60M prompt tokens (repo context) + 15M code completions | 75.0M tokens (60M in / 15M out) | $270.00/mo | $194.40/mo -28% |
| Enterprise Agentic Workflow 120M prompt tokens (reasoning loops) + 30M output actions | 150.0M tokens (120M in / 30M out) | $540.00/mo | $388.80/mo -28% |
Need custom token inputs or prompt volumes?
Use our interactive multi-model token calculator to test exact prompt and completion sliders.
Architecture & Capabilities
Technical parameters, supported modalities, and optimal developer use cases.
🎯 Recommended Use Cases
Complex software architecture, full-repo autonomous agents, advanced reasoning
Supported Modalities
📐 Context & Output Limits
- Maximum Context Window: 1,000,000 tokens (1M)
- Maximum Output Length: 128,000 tokens
- Speed / Latency Tier: Fast
- Official Provider: Anthropic
Frequently Asked Questions
Everything you need to know about Claude Sonnet 5.5 API pricing and token calculations.
How much does Claude Sonnet 5.5 cost per 1M tokens?
Claude Sonnet 5.5 charges $2.00 per 1M input tokens and $10.00 per 1M output tokens. For standard balanced workloads (3:1 input:output ratio), the effective blended rate is $4.000/1M tokens.
Does Claude Sonnet 5.5 support prompt caching?
Yes. Cached prompt reads are billed at $0.2000 per 1M tokens, saving you up to 90% on repeated context, RAG documents, and system instructions.
What is Claude Sonnet 5.5's maximum context window?
Claude Sonnet 5.5 supports up to 1,000,000 tokens (1M) in its context window, allowing you to ingest large files and multi-turn chat history with up to 128,000 tokens generated per response.
How does Claude Sonnet 5.5 compare to other models?
With a CostRatio rating of A, Claude Sonnet 5.5 provides competitive token economics for frontier flagship tasks. Review the peer comparison table above to compare input and completion rates directly against alternative models.
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