Updated
Updated
AIAnthropic has cut Sonnet 5.5 cache read pricing in half to $0.10 per million tokens, with input at $2 and output at $10 per million tokens. The company says this makes Sonnet 5.5 roughly 20% cheaper on most agentic work. The change applies to API usage only and does not alter Claude Code usage limits.
AIAnthropic's Claude Haiku 5.5 is described as a good Haiku, with a 100k token context window and roughly 10x lower cost than Claude Haiku 4.5. The quoted Claude announcement says it is the cheapest, fastest, and most capable small model Anthropic has released, costing about 75% less to run on average than Haiku 4.5.
AIAnthropic released Claude Haiku 5.5, which it calls its cheapest, fastest, and most capable small model. It costs around 75% less to run than Haiku 4.5 and is aimed at high-volume, cost-sensitive tasks such as summaries and classification. The release also cuts Sonnet 5.5 cache read prices by 50%, and the model is available on AWS, Google Cloud, and Microsoft Azure.
AIOpenAI introduced GPT-6 Sol and GPT-6 Luna, which build on advances behind GPT-6 Astra. The company says it cut API prices 50% for Sol and Luna compared with GPT-5.6 promotional pricing, passing on caching and inference efficiency gains. Simon Willison notes GPT-6 Luna costs half of GPT-5.6 Luna and calls Luna his favorite model for building product features because of its cost and speed.
AIThinking Machines has introduced Inkling, a model that reasons across text, image, and audio, with full weights made available. It is available for fine-tuning on Tinker and can be tried in the Inkling Playground. Hugging Face's Leandro von Werra praised the release for its grounded writing, interesting details, and strong ecosystem integration.