eu.anthropic.claude-sonnet-4-20250514-v1:0 pricing
Per million tokens, in US dollars. Synced from the public price feeds on 2026-08-07, and these are the same numbers KostLens bills from.
What it costs
| Provider | Input | Output | Cached input | Cache write | Cache write, 1h |
|---|---|---|---|---|---|
| bedrock | $3.00 | $15.00 | $0.300 | $3.75 | - |
A dash means the provider does not publish that rate, not that it is free.
The rate most price tables leave out
Reading from the prompt cache is cheap, and everybody publishes that number. WRITING to it is a separate, disjoint set of tokens billed above the input rate, and almost nobody publishes it. On bedrock, eu.anthropic.claude-sonnet-4-20250514-v1:0 charges $3.00 for fresh input and $3.75 to write into the cache.
It matters because a cost tool that folds cache writes into plain input understates the bill of every heavy cache user, and the people who reuse context are exactly the ones caching the most. KostLens counts them apart.
Long prompts reprice the whole call
Past 200k tokens of input, bedrock bills eu.anthropic.claude-sonnet-4-20250514-v1:0 at a different rate: $6.00 input and $22.50 output . Not the tokens past the threshold: the whole call. A long-context workload that crosses it on some requests and not others has two prices, and averaging them is how a forecast goes wrong.
Know what this costs you, per customer
These are list prices. What they turn into on your bill depends on your token mix, and which of your customers is generating it. KostLens wraps your existing client in three lines, reads the usage the provider already returns, and gives you cost per customer and per feature. Your prompts and API keys never touch our servers.