VendorSpiesyou
Price/rate-change surveillance
- List-price alerts
- Yes
- Rate-limit alerts
- Yes
- Alternative suggestions
- Yes
- Provider price history
- Yes
AI vendor intelligence, live
Know when the rules change.
VendorSpies watches AI pricing and rate limits around the clock—so your team sees the change before it reaches the invoice.
30 vendors monitoredDaily verificationVerified history
Surveillance streamLive
Live · last 24h
connecting…Pulling the monitor…
Verified against public vendor sourcesREFRESH / 30S
Changes detected…
Vendors monitored…
Founders locked in…At $29/mo
Live public activity
Evidence, not promises.
Every detected change — across every tracked AI vendor — lands here, on the public storefront, before it lands anywhere else. Sign up to receive alerts by email, or just watch the engine work.
Live public activity
connecting…Polling the monitoring engine…
How it works
Quietly watching. Always ready.
No agents to install, no scrapers to maintain. Pick the vendors your stack relies on and let the surveillance begin — the entire loop below is automated.
01
Add the AI vendors you depend on
Drop in OpenAI, Anthropic, Google, Mistral, or hand us your own vendor URL. The monitor starts polling their public pricing pages and rate-limit docs on the next cron tick.
02
Set the threshold that matters to you
From "every change" to "any increase above 5% on a tier you actually use," the alert engine drops the noise on the rest. Most teams start broad and tighten from there.
03
Get the alert before the invoice lands
Realtime emails. A weekly digest. A live public feed showing every detected change — including the ones you have not subscribed to — so you can verify the engine is alive.
Spend tools look back. VendorSpies looks at the price page.
Cost dashboards tell you what you spent. VendorSpies tells you the moment a vendor changes the list price — before the next invoice reveals it.
Cloud spend analytics
- List-price alerts
- No
- Rate-limit alerts
- No
- Alternative suggestions
- Partial
- Provider price history
- Partial
AI gateway + observability
- List-price alerts
- No
- Rate-limit alerts
- Partial
- Alternative suggestions
- No
- Provider price history
- No
LLM tracing + evals
- List-price alerts
- No
- Rate-limit alerts
- No
- Alternative suggestions
- No
- Provider price history
- Partial
LLM proxy + routing
- List-price alerts
- No
- Rate-limit alerts
- Partial
- Alternative suggestions
- No
- Provider price history
- No
FinOps + cloud cost
- List-price alerts
- No
- Rate-limit alerts
- No
- Alternative suggestions
- Partial
- Provider price history
- Partial
AI pricing + policy ledger
- List-price alerts
- Yes
- Rate-limit alerts
- Partial
- Alternative suggestions
- No
- Provider price history
- Yes
| Tool | Primary position | List price | Rate limit | Alt. suggestions | Price history |
|---|---|---|---|---|---|
| VendorSpiesyou | Price/rate-change surveillance | Yes | Yes | Yes | Yes |
| Vantage | Cloud spend analytics | No | No | Partial | Partial |
| Portkey | AI gateway + observability | No | Partial | No | No |
| Langfuse | LLM tracing + evals | No | No | No | Partial |
| LiteLLM | LLM proxy + routing | No | Partial | No | No |
| CloudZero | FinOps + cloud cost | No | No | Partial | Partial |
| Tollbooth | AI pricing + policy ledger | Yes | Partial | No | Yes |
Simple pricing
Intelligence that pays for itself.
Start free with three vendors and a weekly digest. The first 100 founders lock in $29/mo for life, while Standard, Team, and Enterprise scale alerts, collaboration, and API access.
Free
$0 forever
A permanent account for tracking the three vendors that matter most. No card or trial clock.
- Monitor up to 3 AI vendors of your choice
- Weekly email digest of detected changes
- No payment method required
- Upgrade any time for realtime alerts and history
Founder
$29/mo
Locked for life. First 100 subscribers only — once the quota fills, Standard pricing kicks in.
- Surveillance across all seeded vendors
- Email + weekly digest alerts
- Historical price/rate-limit charts
- Custom vendor source URLs
Standard
$79/mo
Everything in Founder, with GA-level pricing.
- Same coverage and dashboard as Founder
- Email + weekly digest + Slack delivery
- Custom vendor source URLs
- Priority support
Team
$149/mo
Up to 5 seats. Slack/Teams + public API access.
- Multi-seat dashboard
- Slack + Microsoft Teams delivery
- Read-only public API key with hourly budget
- Audit trail across the org
Enterprise
From $399/mo
Custom coverage, seats, API limits, onboarding, and SLA.
- Custom parsers and private sources
- Expanded seats and API limits
- Implementation and security review
- Priority support with service-level agreement
See all plans
Switch tiers any time from the dashboard — Stripe handles the rollover.
No proxy, SDK, or production-traffic access required. VendorSpies monitors the source—not your prompts.
Trusted by teams that watch their AI bills
The surveillance keeps running — even when you don't
Every source-check cycle, the monitoring engine sweeps our seeded AI vendor set — and posts each detected change here, on the public feed, and in subscriber inboxes. The numbers below update live from the same data plane your alerts use.
Changes detected…Provider and model-level events
Vendors monitored…Pricing + rate limits, checked every 10 min
Founders locked in…At $29/mo for life
What teams want to know before signing up
Stop finding out from your invoice
Your vendors won't announce every change. We will.
The Founder window is open for the first 100 subscribers. Monitor 30 first-party provider baselines plus 400+ OpenRouter-listed models, with detected model events, exact source evidence, and historical diffs.