Claude Sonnet 5.5 API pricing
5 providers serve Claude Sonnet 5.5. Claude Sonnet 5.5 is a proprietary API model, up to 1000K context. Prices below are per 1M tokens, cheapest input first.
Refreshed 2026-10-08 · list prices from provider APIs| Provider | Input $/1M | Output $/1M | Cache read $/1M | Context | |
|---|---|---|---|---|---|
| Anthropic | $2.00 | $10.00output floor | $0.100 | 1000K | Use |
| AWS Bedrock | $2.00 | $10.00 | $0.100 | 1000K | Use |
| Azure AI Foundry | $2.00 | $10.00 | $0.200 | 1000K | Use |
| OpenRouter | $2.00 | $10.00 | $0.200 | 1000K | Use |
| Google Vertex AI | $2.00 | $10.00 | $0.100 | 1000K | Use |
The cheapest way to run Claude Sonnet 5.5
On an illustrative 70M-input / 30M-output monthly workload, today's lowest listed cost is roughly $440/month — the same at Anthropic, AWS Bedrock, Azure AI Foundry and 2 more. Input-heavy, output-heavy and cache-heavy workloads can produce different winners. Use the live mix calculator below rather than combining floors from two different providers. It is API-only, so the table above is your full set of options. Run your own numbers in the breakeven calculator, or read the breakeven math.
Your actual monthly cost
Cache read uses the listed cache rate where available; otherwise it falls back to normal input price. Batch, write-cache, volume and negotiated discounts are excluded.
Related models
| Model | Cheapest in $/1M | Cheapest out $/1M | Providers |
|---|---|---|---|
| Claude Haiku 4.5 | $1.00 | $5.00 | 12 |
| Claude Sonnet 4.5 | $3.00 | $15.00 | 10 |
| Claude Sonnet 4 | $3.00 | $15.00 | 9 |
| Claude Opus 4.5 | $5.00 | $25.00 | 8 |
| Claude Fable 5 | $10.00 | $50.00 | 8 |
| Claude Opus 5 | $5.00 | $25.00 | 8 |
FAQ
What is the cheapest API for Claude Sonnet 5.5?
As of 2026-10-08, the lowest input price for Claude Sonnet 5.5, $2.00 per 1M tokens, is the same list price at Anthropic, AWS Bedrock, Azure AI Foundry and 2 more. The lowest output price, $10.00 per 1M tokens, is likewise shared by the same providers. The cheapest provider for a real workload depends on its input/output mix.
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