Leak claims Anthropic released Opus 5.5 the same day as GPT-6 Sol
A post claims Opus 5.5 launched the same day as GPT-6 Sol with lower cost and stronger results on some benchmarks, and says Sonnet 5.5 and Haiku 5.5 are coming for Sol and Luna.
🚨 I think OpenAI seriously underestimated what Anthropic had cooking. Astra dropped and OpenAI looked like it had taken the lead. They were over the moon hyping Astra and marketing it like crazy. Then Anthropic quietly dropped Opus 5.5 - on the same day OpenAI announced GPT-6 Sol. No massive hype campaign. No “we’re changing everything” bullshit. 😭 Just a fucking model that showed up with: → 40% lower typical workload cost than Opus 5 → Fable 5.1-level performance on most work → Stronger results than Astra on several published evaluations → A software benchmark where it beat Sol at roughly 1/3 the cost And the craziest part? They are preparing Sonnet 5.5 and hasn't even dropped yet. Leaks suggest it could comfortably beat Sol and potentially reach Astra-level capability on some workloads. And Haiku 5.5 is reportedly coming for Luna. If these leaks hold up… Anthropic may have quietly swept across OpenAI’s entire model lineup. And they did it with almost fucking no noise. Now DevDay is Tuesday. OpenAI has a LOT to answer for.