“This week brought Gemini Argon, Google’s first frontier-level model in months. We also got Claude Sonnet 5.5, GPT-6.1 Sol, and ElevenLabs’ most emotive voice model yet.”
Anthropic’s Claude Sonnet 5.5 is now available, offering performance that tops Fable 5.1 on one index, while running 30% faster and 30% cheaper than Sonnet 5 (here’s the prompting guide). Separately, ElevenLabs rolled out Eleven v4, its most emotive voice model yet, built on a new architecture to improve tone, pacing,






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