Sonnet for new decisions. Haiku for established implementation.
The model routing rule in one sentence. After your first sprint, 80% of sessions are implementation against decisions already made. Those sessions do not need frontier reasoning. They need frontier context.
X / Twitter
Post 1 279 / 280
Sonnet for new decisions. Haiku for established implementation. That is the whole rule. After your first sprint, roughly 80% of your sessions are implementation against decisions you have already made. Those sessions do not need frontier reasoning. They need frontier context.
Standalone. Quotable. Pin candidate. Post any day. No threading needed, this one lands on its own.
Bluesky
Post 1 152 / 300
Sonnet for new decisions. Haiku for established implementation. After your first sprint, 80% of sessions are the second kind. That is the whole rule.
Shorter Bluesky version. Same idea, tighter.
Mastodon
Post 285 / 500
Sonnet for new decisions. Haiku for established implementation. After your first sprint, roughly 80% of your sessions are implementation against decisions you have already made. Those sessions do not need frontier reasoning. They need frontier context. That is the whole routing rule.
Single-paragraph Mastodon version. Under 500 chars.