---
title: "Anthropic says Fable 5.1 \"will cost an estimated 25% less than Fable 5 for typical workloads\" and up to ~45% less for \"highly agentic work\" (Zac Hall/9to5Mac)"
type: signal
url: https://frontiernewswire.com/s/anthropic-says-fable-5-1-will-cost-an-estimated-25-less-than-fable-5-57adf887
published: 2026-09-01T23:52:37.000Z
byline: "Source: TECHMEME"
---

# Anthropic says Fable 5.1 "will cost an estimated 25% less than Fable 5 for typical workloads" and up to \~45% less for "highly agentic work" (Zac Hall/9to5Mac)

Source: TECHMEME · Published 2026-09-01 · Canonical: https://frontiernewswire.com/s/anthropic-says-fable-5-1-will-cost-an-estimated-25-less-than-fable-5-57adf887

Zac Hall / 9to5Mac : Anthropic says Fable 5.1 "will cost an estimated 25% less than Fable 5 for typical workloads" and up to \~45% less for "highly agentic work" — In June, Anthropic first released Fable 5, its Mythos-class AI model for Claude. Three months later, Anthropic is enhancing Claude …

In this story: [Claude Fable 5.1](https://frontiernewswire.com/models/claude-fable-5-1), [Fable 5](https://frontiernewswire.com/models/fable-5)

## Sources

- [Read the original at TECHMEME](https://www.techmeme.com/260901/p59#a260901p59)

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