2026-07-16
Experiment reports captured on 2026-07-16, one tool on one task each, newest first.
Runs captured on 2026-07-16, newest first. Each is one tool on one task with the full trace read closely.
July 2026
Thursday, 16 July
python-2303, five free models
The earlier python-2303 run left the five free zen models unmeasured, since the free tier was rate limited all session, and it guessed the defensive-coding paragraph would matter most for a weak model. This run measures them.
python-2303, code-as-action wins
An earlier run called kubernetes-client python-2303 an unwinnable hidden-contract coin flip for tomo-cx, the structured-tools engine, which lost every one of five attempts on three gpt-5.6 models.
new OI is a Codex fork, ~2x the cost
Open Interpreter's Python code-as-action loop ended at 0.4.2, and its main line is now a Rust program, a fork of OpenAI Codex tuned for low-cost models. The lab's openinterpreter column now tracks that rewrite, release rust-v0.0.
oi dialect zoo, four fences
A cheap model told to write a Markdown code fence keeps its shell or python command but wraps it in a different costume from turn to turn, and tomo's oi engine only read the Markdown one.
oi glued fence, a cheap-model harness fix
tomo's oi engine acts by writing fenced code blocks, so its block parser is on the hot path of every round. A cheap model routinely writes a closing fence glued straight onto the next opening fence, with no blank line between them, so two fence lines arrive as one.
bridge cache hole and prompt_cache_key
The 2026-07-15 dynaconf run named the bridge's zero percent cache-read rate as its most actionable finding, so this run tries to close it.
cx compaction mirage under prefix cache
Tomo's cx engine rebuilds every request as the whole conversation plus the running turn, so an offline replay of six recorded runs showed a 76 to 86 percent cut in wire bytes once older tool results are stubbed. That headline did not survive the live check.