Anthropic Releases Claude Opus 5.5: Fable 5.1-Level Performance at 40% Lower Running Cost Than Opus 5
Anthropic released Claude Opus 5.5, matching Fable 5.1 on most work at about 40% lower cost.
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- Mentions · 7d0
- Mentions · 30d0
- All mentions2
- First seenSep 22, 2026
- Last mentionedSep 22, 2026
Timeline
2 articles · newest firstClaude Opus 5.5
Anthropic released Claude Opus 5.5, matching Fable 5.1 on most work at about 40% lower cost with stronger safeguards.
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Appears with
- GPT-5.6 Solai model · 2
- Claude Mythos 5.1ai model · 2
- Claude Opus 5ai model · 2
- Anthropicorganization · 2
- Claude Opus 4.8ai model · 2
- GPT-6 Astraai model · 2
- Claude Fable 5.1ai model · 2
- METRorganization · 2
- Frontier Designorganization · 2
- Claude Opus 5.5ai model · 2
- Claude Sonnet 5.5ai model · 1
- Anthropicvendor · 1
- Claude Platformproduct · 1
- Claude Haiku 5.5ai model · 1
- Microsoftvendor · 1
- Claude Codeproduct · 1
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