AI Flash Report

Claude Sonnet 4 API price history

Claude Sonnet 4 (Anthropic) currently costs $3.00 per million input tokens and $15.00 per million output tokens. No price change has been observed since tracking began on 2026-04-12. Confirmed unchanged as of 2026-06-15.

Price timeline

$0 $4.13 $8.25 $12.38 $16.50 2026-04-12 2026-06-15 Input: $3.00/Mtok observed 2026-04-12 Output: $15.00/Mtok observed 2026-04-12 Input / Mtok Output / Mtok

Single observed price point — the line shows the price holding steady from first observation through the latest weekly verification.

Every observed price point

Claude Sonnet 4 dated API price observations
Observed Input / Mtok Output / Mtok Cache read / Mtok Source
$3.00 $15.00 — archive backfill

Dates are when our snapshot observed the price, not necessarily the vendor's announcement date. Prices from each lab's official pricing page, per million tokens.

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