Dev trains a world model on 50K+ real SWE-bench agent runs to guide coding agents
Decent-Ad9950 · reddit · 2026-09-21
Reddit user Mephisto1122 shared TovanaEngine, an open-source "world model" that gives coding agents repo-level experience:
- Motivation: a coding agent only sees its current run — it doesn't know how similar runs usually go or how the repo typically behaves
- Data: trained on 50K+ real coding-agent runs from SWE-bench Verified across 25 models, plus behavioral signals like merge rates, review time, and repo size — over 1M step-to-step transitions
- Goal: give the LLM actual experience to lean on, cut wasted reasoning on bad paths, and improve task success
- Usage: runs locally in Docker, nothing sent out, offers MCP + HTTP API
The author says it's just the beginning, with more models on the way.
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