What Tablif read on Harness²'s site
Harness² describes itself as: “GitHub - google-research/harness2 · GitHub”
- Stage: Live, no waitlist
What it is
Calls itself “framework”.
- Calls itself: framework
“Harness² from Google Research is a plug-and-play recursive agent harnessing framework”
Who it sells to
Sells to developers.
- Sells to: developers
“For model-backed benchmarks, install Node.js 20+, the Google Cloud CLI , and the benchmark dependencies .”
How it runs
A command-line tool for Linux. Runs locally and works offline. No API. Open source. AI is the core of the product.
- Kind: cli
- Runs on: Linux
- Runs where: on the device, offline
- API: no
- Open source: yes
- AI role: core to the product
“…uv pip install -e ' .[render] '”
“Use Linux, Python 3.12, and uv .”
What it works with
Names Codex, GLM-5 and 5 more on its pages.
- Names: Codex · GLM-5 · Gemini 3.5 Flash · +4
“OpenCode and Codex executors , and JobBench, LAB, and WorkBuddy-Bench .”
“…a single Harness² step improves GLM-5 and Gemini 3.5 Flash over their base harnesses”
What it offers as proof
Live, no waitlist. Publishes docs.
“You must be signed in to change notification settings”
“…docs -> https://github.com/google-research/harness2/tree/main/docs”
Sources
Tablif read these pages, last on 20 Oct 2026. Everything above is what the product says about itself; Tablif does not verify every claim.
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