Weco AI is a research lab with the explicit goal: "build recursively self-improving AI." The CEO Jiang posted: "The first experimental evidence of recursive self-improvement (RSI)."

x thread: https://x.com/zhengyaojiang/status/2077079782463005113 (<- has pictures to aide understanding) blog: https://www.weco.ai/blog/first-evidence-of-recursive-self-improvement To avoid sensationalism, they are claiming "Level 1 RSI" (net positive), not the higher levels (ignition/inflection). The inner loop: An AI automatically tries to improve a model. The tasks the inner-loop agent works on span three families. ML engineering: train a model end to end against a metric. Heuristic algorithm engineering: competitive-programming-style problems in hard combinatorial optimization, like routing, packing or scheduling, where exact solutions are out of reach and you iterate on heuristics and algorithms. Harness engineering: improve an agent scaffold around models, prompts, context management and verification that turns an LLM into a working system, like making an off-the-shelf coding agent resolve more SWE-bench issues. They call this AI-Driven Exploration (AIDE). (Paper from February 2025) ✨✨✨✨NEW:✨✨✨✨ The outer loop: An AI tries to improve how the inner loop works (e.g. changing search tree algorithms, preventing reward hacking by adding checks, changing problem solving patterns) They call this AIDE2 Their experiment took 8 days of wall clock time for 100 outer loops, using (for budget reasons) Gemini flash 3 for inner loop and Opus 4.7 for outer loop. "The result beats the harness we hand-tuned for two years, on held-out benchmarks." In other words: the final model spit out by AIDE fixed by Claude >>> the final model spit out by AIDE set up by humans. And Claude did it 100x faster. And that was with Opus 4.7 (released April 2026). Imagine what they are up to with unchained Mythos/Sol with no budget! 🥵 Then you will understand why even Sam Altman agreed with Demis's recent call for organizational infrastructure capable of orchestrating a coordinated slowdown.