AI pricing

Anthropic has released Sonnet 5.5, the latest version of its mid-tier Claude model, claiming 30% faster performance and significantly lower token costs than its predecessor. The company says the model now outperforms Opus 5.5 on agentic coding tasks and carries cyber capabilities comparable to Opus 5.

Anthropic released Claude Opus 5.5 at $4/$20 per million input/output tokens, undercutting Opus 5's $5/$25 pricing while claiming better agentic coding scores. OpenAI countered with GPT-6 Sol ($2/$10) and GPT-6 Luna ($0.10/$0.50), both up to 50% cheaper than GPT-5.6's promotional rates.

Anthropic released Claude Opus 5.5 on Tuesday, cutting output token pricing to $20 per million tokens from $25 while improving coding and knowledge-work performance. The model arrives as Anthropic CEO Dario Amodei has pledged to slow capability advances to match safety work.

Meta's new Muse Spark model comes with a two-tier pricing scheme: a standard rate, and a discounted 'contributor' rate — up to 95% cheaper — for customers who let Meta use their prompts and outputs for training future models. The move follows a failed attempt earlier this year to track employee computer usage for the same purpose.

New Ramp spending data shows Anthropic's flagship Fable 5 model, priced at $10/$50 per million tokens, is seeing weak corporate adoption compared to OpenAI's GPT-5.6 Sol. Analysts suggest frontier AI pricing may have hit a ceiling.

Anthropic released Claude Opus 5 on July 24, 2026, pricing it identically to Opus 4.8 at $5 per million input tokens and $25 per million output tokens while claiming performance approaching its higher-tier Fable 5 model. The release includes a faster processing mode, automatic safety fallbacks, and mid-conversation tool switching that preserves prompt caching.