How to Cut Amp Code Agent Costs on Large Refactors
Amp bills by usage on top of a subscription that starts near $10 per month, and there is no free tier, so a careless afternoon of agent work can cost more than the plan itself.
The usage model is a deliberate design choice by the ex-Sourcegraph team behind it. There is no cheap model to swap in and no way to cap spend per request. That makes cost control a workflow problem: what you ask, how often you approve, and how long you leave the agent running.
Why is there no free tier?
The team argued that a free plan forces them to route users to a weak model, which produces useless output and a bad first impression. Instead Amp always runs frontier models and charges for them. Reasonable, but it means you cannot experiment for free.
What actually drives the bill?
- Number of agent turns, including retries after failed commands.
- How much of the repository is pulled into context per turn.
- Model choice, which is automatic and not user-configurable.
- Long-running sessions that keep thinking while you do something else.
The retry loop is the hidden cost. If a test fails and the agent keeps rerunning it with variations, every attempt bills. Capping that behaviour is the single biggest lever you have.
How do you scope a refactor to stay cheap?
Break the job into discrete requests with a clear finish line: “rename this type across the repo and update imports” is measurable. “Improve the codebase” will run indefinitely. Review the plan before approving multi-file edits, and stop the session once the diff is correct rather than asking for a further polish pass.
What does a realistic month cost?
| Usage pattern | Approximate | Note |
|---|---|---|
| Light, a few requests a day | $10-30/mo | Base plan plus modest usage |
| Daily multi-file refactors | $50-150/mo | Typical professional use |
| All-day agent sessions | $200+/mo | Easy to reach unintentionally |
These are approximations, not published tiers. The point is the spread. A team that budgets a flat $10 and lets everyone run all day will get a shocking invoice.
How do you forecast before committing?
Run one representative week, log the usage, then multiply. Do not guess from a single afternoon; cargo-culting a low estimate is how teams end up arguing with finance. Watching the first month’s real invoice is the only honest calibration.
Who should skip Amp entirely?
Anyone whose work is mostly in-editor autocomplete. Amp is built for terminal-driven, multi-file agent work, and using it as a fancy tab-completion engine is an expensive way to buy a feature you could get free elsewhere. If your budget is tight and your needs are light, look at a cheaper coding assistant first.
Key Takeaways
- Amp has no free tier; plans start around $10/mo plus usage.
- Retry loops and long sessions are the biggest cost drivers.
- Scope each request to a measurable finish line and stop when done.
- Forecast from a real week of usage, not a single session.
