Claude Opus 4.8 round trip vs the generated Heat path.
One prompt asked Claude Code CLI to write a small Heat program. The model round trip was live and variable; the generated Heat compile/run path was local and deterministic.
Live LLM authoring
Claude Opus 4.8
via Claude Code CLI
76.94s
round trip, variable, not a guaranteed SLA
Local Heat path
Generated Heat program
compiled locally
0.05s
compile, plus <0.01s run
Why This Matters
The goal is not to make the model faster.
The goal is to need fewer model round trips. Heat is designed so AI-authored code has fewer ambiguous choices and more compile-time refusal when the first draft is wrong.
Artifacts
The raw response included a short prose preface before the Heat code, so this page does not claim the full terminal transcript was a valid Heat source. The generated Heat code itself was compiled unchanged.
Measured locally via Claude Code CLI and /usr/bin/time -p.
LLM timing includes client, network, provider, and model latency.