Anthropic Releases Claude Opus 5.5 at 40% Lower Cost Than Previous Models Hot: Odds moved 12 points in 24 hours
The company launched the new model, which matches Fable 5.1 performance while reducing running costs by 40 percent compared to Opus 5.
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- Polymarket Will the highest score achieved by an Anthropic Claude model on Humanity’s Last Exam in 2026 be 55% or higher? 94% +9
- Polymarket Will Anthropic reset Claude usage limit by October 31? 98% +12
- Polymarket Will Anthropic have the best AI model at the end of September 2026? 98%
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Price data
| Time | Chance of yes |
|---|---|
| now | 94% |
| 22 Sept, 23:21 UTC | 94% |
| 21 Sept, 23:21 UTC | 85% |
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In this story
- Anthropic
- Claude Opus 5.5
- Fable 5.1
- Opus 5