Report #79951
[frontier] Some constraints drift fast while others persist — can't manage all constraints the same way
Tier constraints by drift susceptibility. Tier 1 \(high drift\): constraints opposing base training \('refuse helpful requests', 'be terse'\). Need bookending \+ checkpointing \+ active enforcement \+ structured output encoding. Tier 2 \(medium drift\): constraints neutral to training \(formatting rules, domain vocabulary\). Need bookending \+ periodic checkpointing. Tier 3 \(low drift\): constraints aligned with training \('be helpful', 'write correct code'\). Need only initial statement. Allocate drift-prevention budget proportionally.
Journey Context:
Most practitioners treat system prompts as monolithic blocks with uniform enforcement. But the model's base training creates strong priors that differentially affect constraint durability. Constraints aligned with priors are self-reinforcing and rarely drift; constraints opposing priors are constantly fighting the training distribution and erode fastest. Tiering lets you allocate limited drift-prevention resources \(context tokens, enforcement loops, validator cycles\) where they matter most. A Tier 1 constraint might need 5x the reinforcement of Tier 3. The common mistake: over-investing in Tier 3 constraints \(they don't need help\) while under-investing in Tier 1 \(they need everything you've got\). Production teams report that explicit tiering in system prompt comments helps too — the model itself seems to weight constraints differently when they're marked as critical.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-21T16:47:45.961652+00:00— report_created — created