# Momentic

> AI QA platform from a YC W24 team. Its new agent, Mo, takes a prompt, explores your web app (a URL or a tunnelled local app) or an uploaded iOS or Android build, and reports bugs with reproduction steps and recordings. It also has agentic tests kept as YAML in your repo, a CLI for local and CI runs, and an MCP server so your coding agent can write, run and debug tests.

- Page: https://vibetoolrank.com/tools/momentic/
- Markdown: https://vibetoolrank.com/tools/momentic.md
- Official: https://momentic.ai/
- Category: Testing & Debugging (https://vibetoolrank.com/best/testing/ · https://vibetoolrank.com/best/testing.md)
- Pricing: Free: $0/month with $50 of included usage each month (test steps, hosted runtime, AI features, and Mo share one balance; no overages, runs pause at $0), all core features and AI test authoring, 30-day results retention, no credit card. Scale: $500/month with $500 included usage, add funds from $50, 5 Android + 5 iOS devices, SMS/OTP numbers, shared Slack. Enterprise: custom test-based pricing with SAML/SCIM/audit log
- Free tier: Yes: Free plan with $50 of usage each month, no credit card required (official pricing page, verified 2026-11-05)
- Last checked: 2026-11-06

## Agent test

- Overall: **9.6/10** (outcome 10, speed 10, cost 10, DX 7, reliability 10)
- Tested: 2026-11-05 · Runs: 3 runs · Edition: Momentic Free ($50/mo usage). Mo via qa CLI 0.32.0 --effort low; YAML via momentic CLI 3.70.0 local Chromium. Not Scale/Enterprise, not mobile. Published score = 2026-11-05 happy-path; 2026-11-06 seeded bug-finding is supplemental.
- Summary: Adapted QA task (not T3): Mo verified login + add-to-cart on Momentic's public wizard demo shop in 3/3 sessions (~60–95s, ~$0.08–$0.12 each). Wizard YAML add-to-cart also 3/3. Overall 9.6 (happy-path edition). 2026-11-06 supplemental: Mo caught a seeded local-shop pricing bug (line total = price×qty+1) in 3/3 `qa start --effort low` tunnel sessions (~$0.40–$1.15 each, ~$2.65 total); published Overall unchanged.
- Evidence: docs/tests/momentic/RESULTS.md

## Pros / cons

- Pro: Mo completed the cart brief correctly in 3/3 headless CLI sessions
- Pro: Fast on a narrow brief: ~1–1.5 minutes per session at --effort low
- Pro: Cheap on Free: ~$0.30 Mo for three happy-path sessions; YAML local runs also inexpensive
- Pro: Noninteractive wizard scaffolds a working YAML sample and uploads results
- Pro: No credit card on Free; usage pauses at $0 instead of overage bills
- Pro: 2026-11-06: Mo caught a seeded +$1/line cart bug in 3/3 tunnelled local-shop sessions with correct expected/actual
- Con: Needs a Momentic account and API key before CLI/Mo work
- Con: npm package for Mo is qa (npx mo is a different project) — easy to miss
- Con: Published Overall 9.6 is the happy-path cart edition; bug-finding is supplemental evidence, not a blended rescore
- Con: Mo does not write Momentic YAML test files; YAML authoring is a separate path
- Con: Free $50/mo is shared across steps, hosted browsers, AI features, and Mo — a max-effort Mo session can burn a large slice
- Con: Tunneling is alpha; local port conflicts (wrong process on 8765) required a URL correction mid-session once

## Sources

- https://momentic.ai/
- https://momentic.ai/mo
- https://momentic.ai/pricing
- https://momentic.ai/docs/mo.md
- https://news.ycombinator.com/item?id=50339913

Methodology: https://vibetoolrank.com/methodology/