Intelligent by Design
Not every issue needs the same resources. Nightgauge automatically adapts its approach — choosing the right model, the right depth of analysis, and the right pipeline path for every issue.
Right-Sized for Every Issue
Every issue is automatically assessed and categorized. The result drives how deeply the pipeline analyzes your codebase, which AI model is selected, and how the pipeline is routed.
Typo fixes, single-line changes, config tweaks
Fast-tracked through an optimized path — finished in minutes
Simple bug fixes, documentation updates, small refactors
Streamlined pipeline with reduced overhead
New features, moderate refactors, API changes
Full pipeline with comprehensive analysis
Multi-file features, architectural changes, cross-cutting concerns
Extended analysis with deeper code understanding
Large-scale refactors, new subsystems, critical path changes
Maximum analysis depth with thorough exploration
The Right Model for Every Task
Nightgauge picks the right AI model for every stage of every issue — and keeps tuning that choice with your own cost and outcome history, not benchmarks.
Cost Optimized
Formatting, config changes, and documentation tweaks run on fast, lightweight models. Deep reasoning is reserved for work that actually needs it — so you don't pay for reasoning power you don't need.
Automatically Matched
Every issue is scored for complexity and each stage is matched to a model tier — fast for simple work, balanced for standard work, maximum reasoning for the hard parts. Scoring is deterministic; tuning happens within your mode's envelope.
Learns Your Costs
The router tracks cost per success for every model and stage in your workspace. When a cheaper tier delivers comparable results, it quietly takes over — evidence, not guesswork.
Set the Envelope. Routing Fills It In.
A mode is an envelope, not a preset. It sets the floor and ceiling of the model range — adaptive routing still picks per stage inside that band.
Capped at Sonnet, resting on Haiku wherever it suffices. Built for chores, docs, and high-volume runs where throughput matters more than depth.
The balanced default. The full adaptive range — Haiku for plumbing, Opus for hard reasoning — with nothing pinned.
Cost-no-object: every stage pinned to Opus at high effort. The one mode that doesn't route — it pins, deliberately.
Unlocks frontier reasoning where it earns its rate: only complex planning and implementation escalate to Fable 5. Validation is capped at Opus, plumbing stays on Haiku, and trivial issues don't pay frontier prices.
Tuned by Your History
With cost-aware routing on (the default), the router compares each tier's cost per success across your own runs — a minimum sample size and success-rate floor keep it honest — and prefers the cheaper tier when results are comparable. Always inside the mode's envelope: never below the floor, never above the ceiling.
Graceful Under Quota
Frontier capacity is often metered separately from the rest of the model family. If Fable 5 hits a usage limit mid-run, the stage falls back to Opus and retries — the pipeline keeps moving instead of stalling. Only a genuine account-wide limit pauses for a quota cooldown.
Want surgical control? Custom mode pins any stage to any model — Auto, Haiku, Sonnet, Opus, or Fable 5 — right from the VS Code status bar.
Smart Pipeline Paths
Not every issue needs every stage. The system automatically determines the optimal pipeline path — streamlining simple work while giving complex issues the full treatment.
Simple changes like typo fixes, config updates, and documentation tweaks are fast-tracked through a streamlined path. No unnecessary overhead.
Features, bug fixes, and moderate refactors get the full pipeline experience. Planning, implementation, validation, and delivery — all automated.
Large-scale changes get extended analysis with deeper code exploration. The pipeline spends more time understanding your codebase to get it right.
Predictable Where It Matters
Consistent Decisions
- Complexity assessment
- Pipeline routing
- Error handling
- Safety controls
Repeatable, predictable behavior you can rely on.
AI Where It Counts
- Code generation
- Bug analysis
- Test creation
- Implementation planning
Full AI reasoning for creative and complex tasks.

Ready to see it in action?
Nightgauge is available to select clients. Get early access and experience the full pipeline.