# Ai2: what I've logged

> Ai2 comes up in 2 posts of my AI log, from October 2026 to October 2026, and each item below links to the primary source. I filed it under science, agents and coding and open weights.

## Items

1. **HiRO-ACEv2: Simulating extreme weather at 3 km resolution for a fraction of the cost** (Ai2, 14 Oct 2026): A new downscaling model that matches a physics simulation's high-resolution statistics to within 3% and produces global 3 km data at about 1/300th the cost, with models and notebooks available to download. [Primary source](https://allenai.org/blog/hiro-acev2) · [Post](https://heyaliasif.com/ai/2026-10-14-hiro-ace-deep-review-earth-ai#item-1)
2. **How Molmo 2's open release helped an MIT researcher rethink fish tracking** (Ai2, 13 Oct 2026): Molmo2Fish, an experimental model built on open Molmo 2, tracks salmon in sonar footage and fixes tracking errors from plain-language instructions. [Primary source](https://allenai.org/blog/molmo2fish) · [Post](https://heyaliasif.com/ai/2026-10-14-gemini-4-argon-lfm-runai#item-6)

## Posts

- 2026-10-14 [HiRO-ACEv2, Deep Review goes public, Earth AI agents](https://heyaliasif.com/ai/2026-10-14-hiro-ace-deep-review-earth-ai)
- 2026-10-14 [Gemini 4 Argon lands, Run:ai goes open source](https://heyaliasif.com/ai/2026-10-14-gemini-4-argon-lfm-runai)

Canonical: https://heyaliasif.com/ai/topics/ai2