DeepLearning.AI roundup: Claude Haiku 5.5, Microsoft-Decision-1, Muse Wonder, Gemini 4 Argon

According to a summary posted by DeepLearning.AI on October 16 2026 several new AI model releases and updates appeared this week including pricing and capability details for Claude Haiku 5.5 Microsoft Decision 1 Meta Muse Wonder and Gemini 4 Argon.

Claude Haiku 5.5 offers prompt pricing at 0.10 dollars per million tokens and completion pricing at 0.50 dollars per million tokens for contexts up to 100K tokens representing roughly 90 percent savings versus Haiku 4.5 while remaining fast and capable. Microsoft Decision 1 provides calibrated probabilities over fixed options in a single pass for tasks such as classification routing and agent gating at 0.042 dollars per million input tokens with free output. Meta Muse Wonder matches performance of leading models from Google and OpenAI at 4 dollars input and 20 dollars output per million tokens though a full safety report remains unavailable. Gemini 4 Argon entered wide release with a shared 1 million token context window supporting up to 1 million output tokens and introductory pricing of 2 dollars input and 10 dollars output per million tokens through November 30. Python 3.15 became available while Python 3.10 reached end of life prompting projects to adopt newer versions where feasible.