Claude Fable 5.2 Cuts the Price to $8/$40 per 1M Tokens, and Claude Code Moves Fable 5.1 Picks to It

Verdict: Fable 5.2 is a straight 20% list-price cut on Anthropic's flagship public model, and most Claude Code users will be on it whether they choose it or not. Claude Fable 5.1 stays conditional in our directory, and that condition was always cost. We have not tested Fable 5.2, it is not yet in our directory, and every benchmark table in Anthropic's post is Anthropic's own. Measure cost per task on your own work before you count the savings.

What happened

Anthropic released Claude Fable 5.2 and Claude Mythos 5.2 on 9 November 2026. From the launch post:

• Price. "$8 per million input tokens and $40 per million output tokens". Fable 5.1 and Mythos 5.1 list at $10/$50.
• Fast mode. "up to 2.5 times" faster, at "$16 per million input tokens and $80 per million output tokens".
• Same model, two policies. "Claude Fable and Claude Mythos are the same underlying model." Fable carries cybersecurity and biology safeguards. Mythos 5.2 is for vetted organizations through the Cyber Verification Program and the Life Sciences Verification Program.
• Blocked requests. When Fable blocks a query, users get an answer from "Opus 4.8 for cybersecurity and Opus 5 for biology". Anthropic says early testing showed "about 55% fewer blocks" than Fable 5.1.
• Availability. API id claude-fable-5-2, on the Claude Platform, Amazon Web Services, Google Cloud and Microsoft Azure.
• Data. Enterprise customers with Enterprise Frontier Safeguards can use the models with zero data retention; for other customers Anthropic has "30-day retention for safety monitoring".
• Launch promotion. Eligible paid subscribers get one to three Fable resets, and Fable is "included for up to 50% of weekly usage limits for Pro plans and standard seats on the Team plan".

Claude Code moves you over

Claude Code 2.1.321 (9 November) added Claude Fable 5.2 as "now the default Fable model", with 1M context, $8/$40 per Mtok and $0.20/Mtok cache reads. It also changed "saved Fable 5.1 model picks to move to fable: on Pro and Max plans at once, on Team and Enterprise plans once your organization allows it". To stay on the old model, use /model claude-fable-5-1.

Why it matters

• The price was the condition. Our Fable 5.1 verdict is conditional on cost: independent measurement put its spend per task above Fable 5, because it thinks longer. A lower list price helps, but only cost per task tells you whether the bill drops.
• The migration is not opt-in. Once Claude Code updates to 2.1.321, a saved Fable 5.1 pick on Pro and Max moves to Fable 5.2 at once. If a workflow was tuned on 5.1, you need to pin it back yourself.
• Independent numbers are thin. Artificial Analysis lists Claude Fable 5.2 (Max) at 65 on its Intelligence Index v5.0.1, first of 74 models it ranks, at $26.54 and 46.4 minutes per Index task. That is one outside measurement, and we have not run our own.
• There is an API change. Anthropic says "preserved thinking now applies to all accounts" and points developers to its preserved thinking docs to update integrations. We did not read those docs, so we cannot tell you what breaks.

What changes for you