Claude Opus 4.7 vs Opus 4.6 & Frontier Models (Anthropic, Apr 2026)
What Anthropic announced for Opus 4.7: GA date, software engineering and vision upgrades, $5/$25 per MTok pricing, API id claude-opus-4-7, safeguards vs Mythos Preview, and how GPT‑5.4 / Gemini 3.1 Pro appear in official chart footnotes.
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