Compare
Excellent vs Momentic: a browser suite vs evidence for one attempt
A self-healing browser suite, versus a record of what the agent tried and what proved it.
Momentic
Momentic in one line
AI end-to-end testing: tests written in natural-language YAML that heal themselves, hosted browsers and devices, and an MCP server so coding agents can drive browser sessions directly.
- Best for
- Teams whose main risk is the UI breaking, and who want a maintained end-to-end suite without hand-writing selectors.
- Limits
- It is a test suite for the product, not a record of the work. It has no view of what the agent was asked to do, what it tried, or what it claimed when it stopped.
- Stronger than us at
- Browser coverage, by a wide margin. A maintained, self-healing end-to-end suite across hosted browsers and devices is much more than Excellent's browser checks do, and Momentic's tests keep working when the UI moves.
- Price 2026-09-23
- $125 / mo (Pay-as-you-go, 10,000 credits)
Excellent
Excellent in one line
A verification system for agentic tasks — it records what the agent attempted, runs your checks against the claim, and binds the result to evidence you can open.
- Best for
- Teams that want agent work checked before they trust or promote it.
- Limits
- There is no hosted option. You run it on your machines. Verification evidence stays on the machine that produced it — it does not sync to teammates yet. No SSO, and no Mac app has shipped. It does not write tests, and it does not review your diff.
- Stronger than them at
- Keeping the attempt record, running your own checks as the oracle, and trialling prompt, model and tool changes on held-out work from your repository.
- Price 2026-09-23
- Free to install and run (Consulting from $10,000 / month)
Head to head
The capabilities that decide it
Capability by capability — Momentic on the left, Excellent on the right. Prices are the vendor's own, read on 2026-09-23.
| Capability | Momentic | Excellent |
|---|---|---|
Maintained end-to-end browser suite | ||
Self-healing tests | ||
MCP server a coding agent can drive | ||
Records each agent attempt and the claim it made | ||
Evidence beyond the browser | Browser and device runs | Tests, builds, browser checks and your existing GitHub Actions or GitLab CI |
Published price (checked 2026-09-23) | Free $0 forever (2,000 credits per month, about 200 test runs); Pay-as-you-go $125 per month (10,000 credits, about 1,000 runs, overage $0.01875 per credit); Enterprise custom, test-based. No per-seat fees. | Free to install and run. Consulting starts at $10,000 / month. |
Together
They are not mutually exclusive
A Momentic run can be an Excellent check like any other: if the suite passes, that is evidence attached to the attempt; if it fails, the attempt comes back with the failure inside it.
Verdict
When to pick which
Pick Momentic if the question is “does the app still work in a browser”. Pick Excellent if the question is “did this agent do what it said, and what proves it”. The browser is the only place the two overlap.
Pick Momentic if
Teams whose main risk is the UI breaking, and who want a maintained end-to-end suite without hand-writing selectors.
Add Excellent if
You want agent work captured as attempts, checked against evidence you can open, and promoted only when the result is defensible to someone outside the team.
More matchups
See Excellent against the rest of the category
Trust the evidence, not the agent's confidence
Install Excellent, run it beside the agent you already use, and inspect what the checks actually said.