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#MCP and tool calling

All collected and published items, ordered by time. Picks are a selected subset.
Models

New models and versions, open weights, and changes in capability and pricing, with their evaluations.

10/14Wed
  1. Sundar Pichai · X37

    Some great use cases from Googlers building with Gemini 4 Argon 🧵 It has a much stronger grasp of coding and multi-step tool use - starting from a raw Pixel CAD file in Google Antigravity, Argon created this exploded-view animation, lighting, camera choreography, and audio through Blender MCP. It ran 1,000 rounds of iterative loops to check its own renders and refine the code along the way.

    Some great use cases from Googlers building with Gemini 4 Argon 🧵 It has a much stronger grasp of coding and multi-step tool use - starting from a raw Pixel CAD file in Google Antigravity, Argon created this exploded-view animation, lighting, camera choreography, and audio through Blender MCP. It ran 1,000 rounds of iterative loops to check its own renders and refine the code along the way.

9/30Wed
9/28Mon
  1. Hugging Face Blog74

    H Company releases Holo4 agent models: 27B dense and 35B-A3B MoE versions

    H Company has released the Holo4 agent-model family, with a 27B dense model and a 35B-A3B MoE model. Both are available through the H Models API, and weights are open on Hugging Face in BF16, FP8, NVFP4, and 4-bit GGUF formats.

    Why it matters: Holo4 opens both its weights and complete evaluation traces, giving readers a basis to assess the cost and capability limits of general-purpose computer-use agents.

3/17Tue
  1. Mistral AI60

    Mistral releases Leanstral, an open-source coding agent for Lean 4

    Mistral has released Leanstral, which it calls the first open-source coding agent for Lean 4. It uses a sparse architecture with 6B active parameters; weights are available under Apache 2.0, and the agent is integrated into Mistral Vibe and the free `labs-leanstral-2603` API endpoint.

    Why it matters: Mistral has open-sourced a Lean 4 coding agent and reports cost and score comparisons with Claude models and open models, helping readers assess the value of formal-verification approaches.

12/9Tue
  1. Mistral AI82

    Mistral releases Devstral 2 coding models and Mistral Vibe CLI

    Mistral AI has released the next-generation Devstral 2 coding-model family, comprising Devstral 2 at 123B and Devstral Small 2 at 24B. Both are open-source, under modified MIT and Apache 2.0 licenses respectively.

    Why it matters: The article reports the two open coding models' sizes, licenses, SWE-bench results, and head-to-head comparisons with closed models, helping readers assess the current level of open coding agents.