ModelPriceWatch.com
Last scan 2026-10-08 Models tracked 278 Providers 37 Cheapest paid Granite 4.0 H Micro $0.017/Mtok in Every price links to its source

Anthropic price history

Every pricing change we record for Anthropic API models, newest first. Tracking began Oct 6, 2025. Prices re-verified Oct 8, 2026.

What changed

12 recorded changes · newest first · every move keeps its receipt
  1. Oct 8, 2026

    Price change: Claude Sonnet 5.5 price move

    cached_input_per_mtok: $0.20 → $0.10

  2. Oct 8, 2026

    New model added: Claude Haiku 5.5 new listing

    Claude Haiku 5.5 began being tracked.

  3. Oct 5, 2026

    Model removed: Claude Mythos 5 removed

    Removed because Claude Mythos 5 is not sold to ordinary API accounts. Anthropic offers it by invitation only, through Project Glasswing, so the per-token price we showed is not one you can pay without that approval. The model has not been retired. Claude Fable 5.1 is the generally available model on the same rate card, at $10 input and $50 output per 1M tokens.

  4. Oct 5, 2026

    Model removed: Claude Mythos 5.1 removed

    Removed because Claude Mythos 5.1 is not sold to ordinary API accounts. Anthropic offers it by invitation only, through Project Glasswing, so the per-token price we showed is not one you can pay without that approval. The model has not been retired. Claude Fable 5.1 is the generally available model on the same rate card, at $10 input and $50 output per 1M tokens.

  5. Sep 29, 2026

    New model added: Claude Sonnet 5.5 new listing

    Claude Sonnet 5.5 began being tracked.

  6. Sep 23, 2026

    New model added: Claude Opus 5.5 new listing

    Claude Opus 5.5 began being tracked.

  7. Sep 5, 2026

    New model added: Claude Opus 4 new listing

    Claude Opus 4 began being tracked.

  8. Sep 5, 2026

    New model added: Claude Sonnet 4 new listing

    Claude Sonnet 4 began being tracked.

  9. Sep 1, 2026

    New model added: Claude Fable 5.1 new listing

    Claude Fable 5.1 began being tracked.

  10. Sep 1, 2026

    New model added: Claude Mythos 5.1 new listing

    Claude Mythos 5.1 began being tracked.

  11. Jul 25, 2026

    New model added: Claude Opus 5 new listing

    Claude Opus 5 began being tracked.

  12. Jun 30, 2026

    New model added: Claude Sonnet 5 new listing

    Claude Sonnet 5 began being tracked.

Current Anthropic prices

14 models · cheapest blended first

Per 1M tokens, cheapest blended first. "First tracked" is when this model entered our price history.

Current Anthropic model prices per 1M tokens with the date each entered our price history
Model Blended* Input Output First tracked
Claude Haiku 5.5 $0.200 $0.100 $0.500 Oct 8, 2026
Claude Haiku 4.5 $2.00 $1.00 $5.00 Oct 20, 2025
Claude Sonnet 5 $4.00 $2.00 $10.00 Jun 30, 2026
Claude Sonnet 5.5 $4.00 $2.00 $10.00 Sep 29, 2026
Claude Sonnet 4.5 $6.00 $3.00 $15.00 Oct 6, 2025
Claude Sonnet 4.6 $6.00 $3.00 $15.00 Feb 23, 2026
Claude Opus 5.5 $8.00 $4.00 $20.00 Sep 23, 2026
Claude Opus 4.5 $10.00 $5.00 $25.00 Dec 8, 2025
Claude Opus 4.6 $10.00 $5.00 $25.00 Feb 9, 2026
Claude Opus 4.7 $10.00 $5.00 $25.00 Apr 20, 2026
Claude Opus 4.8 $10.00 $5.00 $25.00 Jun 1, 2026
Claude Opus 5 $10.00 $5.00 $25.00 Jul 25, 2026
Claude Fable 5 $20.00 $10.00 $50.00 Jun 17, 2026
Claude Fable 5.1 $20.00 $10.00 $50.00 Sep 1, 2026
* Blended = (3×input + 1×output) ÷ 4 $/1M tokens MODELPRICEWATCH.COM · 2026-10-08

About this log

ModelPriceWatch re-verifies Anthropic API pricing against its official pricing page on a twice-daily refresh cycle and records every change here.

Anthropic overview

Quick stats

Models tracked
14
Recorded changes
12
Tracking since
Oct 6, 2025
Last change
Oct 8, 2026