# Anthropic's Fab le 5.1 is live at $10/$50: new model breakdown and benchmark jump

Source: [DEV Community: ai](https://dev.to/kawsarlog/anthropics-fab-le-51-is-live-at-1050-new-model-breakdown-and-benchmark-jump-2kb0) · 2026-11-09 · AI
Page: https://themorning.dev/story/anthropic-s-fab-le-5-1-is-live-at-10-50-new-model-breakdown-and-benchmark-jump-a0b11b2d54a609be
Kind: release · Impact: medium

## In brief

- Anthropic released Claude Fable 5.1 on September 1, 2026.
- The sticker price is the same as its predecessor, Fable 5, at $10/$50.
- Cache reads are 75% cheaper, and the model more than doubled Fable 5's score on an agentic scientific task benchmark.

## Why it matters

Developers using Claude Fable 5 can get a newer model at the same list price, and cache-heavy workloads should see lower costs.

## Versions

- Claude Fable 5.1
- Claude Fable 5

## Timeline

- 2026-09-01: Claude Fable 5.1 released at unchanged price

## Coverage

- [Anthropic's Fab le 5.1 is live at $10/$50: new model breakdown and benchmark jump](https://dev.to/kawsarlog/anthropics-fab-le-51-is-live-at-1050-new-model-breakdown-and-benchmark-jump-2kb0) — DEV Community: ai, 2026-11-09

Tags: anthropic, claude, llm, pricing, benchmarks, prompt-caching

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Dev – https://themorning.dev