# Daily Model Drift

> Daily Model Drift will test AI models every day through the tools people use, grade every answer with code and publish every response as evidence. It is in calibration now; no measurements are published yet.

Status as of 2026-10-04: pre-launch. This site publishes no measurements yet, and nothing on it should be cited as a result.

- A pilot of one real call per model passed on 2026-10-04. The second version of the test suite is being calibrated.
- Daily baseline collection: not started. Verdicts need about 20 to 25 days of history; full detection power at about 35 days.
- Launch date: not set.

## What it will measure

Every day each model gets fresh, seeded tasks in nine families (arithmetic chains, code tracing, key-value lookup, constraint following, JSON extraction, whole-file edits, long enumerations, benign requests with alarming words, natural answer length), called through the vendor's own command-line tool. Code grades every answer; no model grades another. Each model is compared only with its own previous 28 days, and each week with the four weeks before it. Verdicts: collecting baseline, stable, watch, drift.

## Models

- GPT-6 Luna (low effort), through Codex CLI: planned
- GPT-6.1 Sol (high effort), through Codex CLI: planned
- Claude Sonnet 5.5, through Claude Code: planned
- Claude Haiku 4.5, through Claude Code: planned
- Qwen 3.8 27B (free tier), through OpenRouter, through Claude Code: planned
- Gemini 3.8 Flash (low effort), through Antigravity: pending an adapter decision

## Rules

- Real measurements only; no invented or synthetic numbers are published as measurements.
- Unknown stays unknown: timeouts, harness errors and missing usage are recorded as errors, never as passes or fails.
- Every prompt, raw response, grade and tool version will be published at a dated permalink.
- The data will be open; the licence is not decided yet.

## Links

- [Home](https://dailymodeldrift.com/)
- [Atom feed](https://dailymodeldrift.com/feed.xml): launch notes, then flagged drift events