ColGrep-Agent

Overview

ColGrep-Agent is an open code-search model from LightOn, published October 12, 2026, that runs locally between a coding agent and a repository. It searches with ColGrep, reads promising files, follows references and returns file paths, line ranges and code. In LightOn's tests on 52 code-search questions with Claude Code, delegating search to it cut API tokens by 34.3% versus grep (about 40% cache-aware cost), with 80.8% accuracy against grep's 83.3%, a gap LightOn says is not statistically significant. Latency rose from 13.0 s to 21.6 s per question. The default GGUF file is about 2.5 GB.

This is a sourced directory entry. Features and capabilities are reported in the linked sources; this entry does not document independent Aymorphic testing.

Key features

• Local ~2B-parameter code-search agent (Hugging Face listing shows 3B), GGUF Q8_0 about 2.5 GB
• 34.3% fewer API tokens than grep in Claude Code on 52 questions (LightOn-reported)
• 76.18 file F1 and 19.92 line F1 on SWE-bench Lite code localization
• Returns file paths, line ranges and code snippets
• Install via Homebrew: brew install lightonai/tap/colgrep && colgrep --install-agent
• Claude Code hook mode via colgrep --install-claude-code

Use cases

• Offloading repository search from an expensive frontier coding agent to a local model
• Code localization for issue triage on large repositories

Pricing

Open weights, runs locally; license not stated in the announcement.

Pricing reflects the source record and may change. Confirm current terms with the provider.

Dates and sources

Released

12 Oct 2026

Record updated

19 Oct 2026

Record last checked

19 Oct 2026

• huggingface.co/blog/lightonai/colgrep-agent