Start free or choose a paid tier — one job: catch the price move before it shows up on your invoice.
These tools tell you what you spent. VendorSpies tells you when the rules changed — so the next OpenAI, Anthropic, or Google price recalibration lands in your inbox, not on your AI bill.
No proxy, SDK, or production-traffic access required. VendorSpies monitors the source—not your prompts. Available now across 30 first-party provider baselines plus 400+ OpenRouter-listed models.
- Monitor up to 3 AI vendors of your choice
- Weekly email digest of detected changes
- Permanent free access — no trial or card required
- Upgrade any time for realtime alerts, history, and forecasts
- Locked $29/mo for as long as you stay subscribed
- 30 first-party provider baselines plus 400+ OpenRouter-listed models
- Direct founder concierge: vendor coverage requests answered personally
- Exact source evidence and historical diffs
- Provider price/rate surveillance plus model-level OpenRouter intelligence
- Email alerts on every diff, scoped to the threshold you set
- Custom vendor URLs for any provider not in the default set
- Full history, forecasts, and evidence-first reports
- Everything in Standard, for up to 5 users
- Slack and Microsoft Teams alert routing with reliable public-to-public delivery
- Public API access — up to 5,000 requests per month
- Priority support — your team lands at the top of the queue
- Everything in Team, with expanded seats and API limits
- Custom parsers and private vendor-source onboarding
- Priority implementation, service-level agreement, and support
- Annual contract and security review available
Questions? Contact us
These tools tell you what you spent.
VendorSpies tells you when the rules changed.
AI vendors can change several price dimensions at once: input, cached input, output, batch, priority, and regional rates. VendorSpies records the exact source evidence and historical diff so you can evaluate the impact before the next bill lands.
$29/mo— the launch rate for the first 100 paying founders, locked for life.
$79/mo— full monitoring, evidence, history, forecasts, and realtime email alerts for one operator.
$149/mofor 5 users — collaboration, Slack and Teams routing, and up to 5,000 API requests per month.