Anthropic · Pricing

Claude 3.5 Sonnet pricing

Complete Claude 3.5 Sonnet API cost reference: $3/M input, $15/M output, 200K token context window, $0.30/M cached reads. Verified against official sources.

Prices verified August 20, 2026
Claude 3.5 Sonnet
Input / M
$3
Output / M
$15
Cache read
$0.30
Cache write
$3.75
Context
200K
Batch
Vision
Yes
Reasoning

What Claude 3.5 Sonnet costs in practice

WorkloadCost / callCost @ 1K req/day
Light · 1K in / 300 out$0.0075$228.28/mo
Standard · 10K in / 2K out$0.0600$1826.25/mo
Heavy · 100K in / 20K out$0.6000$18262.50/mo

Estimates assume medium reasoning effort, no batch discounts and no prompt caching. Turn on prompt caching and the input side typically drops 50–90% — run your own mix in the free calculator preloaded with Claude 3.5 Sonnet.

About this page

Prices were last verified on August 20, 2026 against Anthropic's official pricing page. Providers reprice frequently — see our methodology for exactly how estimates are computed, and always confirm final rates with the provider before budgeting.

Claude 3.5 Sonnet FAQ

How much does Claude 3.5 Sonnet cost?

Claude 3.5 Sonnet charges $3 per million input tokens and $15 per million output tokens, with cached input reads at $0.30/M.

What is the context window of Claude 3.5 Sonnet?

Claude 3.5 Sonnet supports a context window of 200,000 tokens (200K) — roughly 150,000 English words or about 300 pages of text in a single request.

Does Claude 3.5 Sonnet support images, audio or reasoning?

Claude 3.5 Sonnet offers vision & image understanding. Prompt caching: writes cost 1.25x, reads cost 0.1x of base input.

How do I estimate my Claude 3.5 Sonnet bill?

A typical workload of 10K input and 2K output tokens costs about $0.0600 per call with Claude 3.5 Sonnet. At 1,000 requests per day that is roughly $1826.25 per month. Use the free AITokenCalculator to run your exact numbers.