Poolside releases Laguna S 2.1, a 118B open-weight coding agent with 1M context
ben_burtenshaw · x · 2026-07-22
Poolside has released Laguna S 2.1, a local coding-agent model aimed at long autonomous runs.
- 118B MoE with 8B active parameters and a 1M context window.
- Open weights under the OpenMDW license.
- Reported scores include 70.2% on Terminal-Bench 2.1, 78.5% on SWE-Bench Multilingual, and 59.4% on SWE-Bench Pro.
- The model is said to run on a single DGX Spark and can sustain up to 24-hour autonomous runs.
- The post also includes a demo prompt for generating a simple Doom-like game in JavaScript and saving it as game.html.
Related event: Poolside Releases 118B Open-Weight Coding Model Laguna S 2.1(35 posts)→
More from coding & agent
- Gergely Orosz: Shipping 10x PRs With AI Agents, Sites Fill With Small Regressions — ducha_aiki · 2026-09-11
- Same Echo Maze prompt, three frontier models: all passed visually but shipped the same hidden bug — eyishazyer · 2026-09-11
- Astra storyboards plus Minimax H3 per-shot generation boost video success rates — Hailuo_AI · 2026-09-11
- Codex tip: use Sol with Astra and Luna sub-agents to save usage — pvncher · 2026-09-11
- agents-best-practices: a provider-neutral Agent Skill for designing and auditing agentic harnesses — tom_doerr · 2026-09-11
- Cognition's SWE-2 uses a KKT duality argument in RL to shift the effort Pareto curve — YouJiacheng · 2026-09-11