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Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.
Showing the first 40 findings. More graph evidence exists in the corpus.
Windsurf Arena Mode shows Opus 4.6 tops overall performance.
Source findingClaude Code Security uses Opus 4.6 as autonomous scanner
Source findingOpus 4.6 achieved 80.8% on SWE-bench
Source findingOpus 4.1 fully removed from API in favor of Opus 4.6
Source findingOpus 4.0 fully removed from API in favor of Opus 4.6
Source findingClaude MAX plan now includes Opus 4.6's 1M token context window without additional API charges
Source findingGPT-5.4 loses 54% retrieval accuracy at 1M tokens while Opus 4.6 only loses 15%
Source findingAnthropic dropped long-context pricing surcharge; Opus 4.6 now $5/$25 per million tokens.
Source findingClaude CoWork now surfaces the 1M context window for Opus 4.6 and Sonnet 4.6
Source findingClaude Code raised default max output tokens for Opus 4.6 to 64k.
Source findingOpus 4.6 scores 0.25% on ARC-AGI-3 private test set.
Source findingARC-AGI-3 benchmark shows Opus 4.6 scores 0.25%
Source finding