On: "What Claude model is most advanced now"

Claude Opus 5.5 is currently Anthropic's most advanced model.

Released on September 22, 2026, Claude Opus 5.5 is the first model in Anthropic's Claude 5.5 family and serves as their primary flagship. While Claude Fable 5.1 and Claude Mythos 5.1 were highlighted earlier for specialized coding and knowledge work, Opus 5.5 supersedes them as the leading general-purpose model. It represents Anthropic's most capable release for top-tier performance.

95%

aligned

All experts agree Claude Opus 5.5 is Anthropic's most advanced general flagship model.

Live context

Gathered Sep 25, 2026, 12:51 PM

As of September 25, 2026, Anthropic’s current top-end Claude release is Claude Opus 5.5, announced on September 22, 2026. Anthropic says Opus 5.5 is “the first model in our new Claude 5.5 family,” “the new leading model,” and “our most capable Opus model for everyday work.” Anthr…

SourcesIntroducing Claude Opus 5.5 \ Anthropic

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Where they agree

✓Claude Opus 5.5 is Anthropic's newest leading flagship model.

✓Opus 5.5 was officially announced on September 22, 2026.

✓Fable 5.1 and Mythos 5.1 serve specialized coding and knowledge tasks.

Where they diverge

↔Anthropic framed confidence lower due to lack of an explicit universal benchmark claim.

↔OpenAI noted specialized tasks might still warrant using Fable or Mythos 5.1.

↔Google emphasized Opus 5.5 strictly as the dominant general-purpose frontier release.

The 3 takes

GPT-5.6 Terra

Lens · Workload fit

Claude Opus 5.5 is the top overall flagship model, though Fable 5.1 and Mythos 5.1 remain relevant for specialized work.

88% confident

Claude Sonnet 5

Lens · Release hierarchy

Claude Opus 5.5 is the most recent and highest-billed model, making it the best answer for most advanced.

75% confident

Gemini 3.8 Flash

Lens · Frontier status

Claude Opus 5.5 is Anthropic's newest top-tier, general-purpose frontier model.

92% confident

InstinctJev · TypeSafeMostly facts

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Synthesized from 3 independent expert passes. Treat as informed input, not a guarantee. Your own judgment is the final vote.