IDEAS, DECISIONS & LESSONS

Journal

Notes on AI, architecture and building useful products.

3 articles

28 Mar 2026 · 5 min read

Devstral 2: Why Open-Source Just Won the Coding Agent War

Mistral's Devstral 2 achieves 72.2% on SWE-Bench at 7x cheaper than Claude Sonnet. Here's what this means for teams building AI-powered dev tooling in 2026.

25 Mar 2026 · 6 min read

cost-optimization

Mistral 3 in Production: What Open-Source AI Gets Right (and Wrong) in 2026

Mistral Large 3's MoE architecture delivers 92% of GPT-5.2's performance at 15% of the cost. As a technical lead who has run open-source LLMs in production, here's where it works and where it fails.

24 Mar 2026 · 6 min read

Mistral Devstral 2: The Open-Source Coding Agent That Challenges Claude and Codex

Mistral's Devstral 2 scores 72.2% on SWE-bench, ships under MIT license, and costs up to 7x less than Claude Sonnet. Here's how it works, when to use it, and whether open-source agentic coding is finally production-ready.