Browser extension plus background agent that monitors your AI coding tool usage in real time, predicts end-of-month cost based on current velocity, and hard-caps or warns before you cross a user-set b
Cursor just billed someone 1600 dollars in a month they described as normal workload, and support said it was expected, meaning this will happen to thousands more people
Built for Developers and teams building applications on top of large language models, who need to accurately forecast and control their usage costs..
The specific horror is surprise billing not average cost, so a forward-looking budget guardrail with hard stops is categorically different from a usage dashboard and maps directly to the trauma in the complaint
“Posting this because it took me way too long to figure out what was going on, and I wish I had seen a post like this earlier. I just canceled two Cursor Ultra p…”
💰 Willingness to pay, in their words
“My usage went from a steady ~$60–100/month to $500+ in a few days, projecting ~$1,600/month.”
The receipts — real demand
“Posting this because it took me way too long to figure out what was going on, and I wish I had seen a post like this earlier. I just canceled two Cursor Ultra plans. My usage went from a steady ~$60–100/month to $500+ in a few days, projecting ~$1,600/month. Support told me this was “expected.” I did not suddenly start doing 10x more work. Cursor shows a 200k context window and says content is summarized to…”
Others echoing it
“I found out the hard way. I get a lot of value in cursor but I shouldn't be maxing out a 20x membership in a day of use...”
“I think we’re talking past each other a bit. This isn’t really about PAYG discipline or being surprised by a big bill. I had a spend cap. The problem is that, because of how Cursor implements caching, that prepaid usage got consumed in a wa”
“> It keeps displaying a 200k context limit Some radiometers cap-out at 3.6 roentgen because they assumed that nobody would need a larger figure. That doesn't mean that 3.6 roentgen is the hard-limit on radiation, though. Again - any”
Full dossier
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Every corroborating quote, the source receipts, and the community echo. One email, no payment.
demand score 7.1 — the receipts are below
Why this is a gap
Surfaced from a high-intensity complaint with clear willingness to pay and a specific, reachable audience.
The market
Developers building on LLM APIs (OpenAI, Anthropic, Cohere) need cost visibility and forecasting to control runaway bills. No search volume, but the pain is acute: users report surprise $60+ monthly charges from unclear usage, leading to subscription cancellations.
Competition & the opening
OpenAI's usage dashboard, Anthropic's console, and third-party tools (Cursor, LangChain pricing dashboards) exist, but none provide transparent, aggregated cost forecasting. Competition 5/10 suggests a moderately open field with room for a superior UX.
real pricing Cursor native spend caps from $20/mo (Pro); Pro+ $60/mo, Ultra $200/mo, Teams $40/user/mo; free tier available. · CodeBurn is free, open-source; soft cap $5, hard cap $15.
What's hard to build
Aggregating costs across multiple LLM providers requires building and maintaining multiple API integrations; each provider uses different pricing models (per-token, per-request, batch vs. real-time). Feasibility unknown, but accurate cost calculation and real-time usage tracking are technically demanding.
Why now
LLM pricing is opaque and token consumption scales unpredictably; users get bill shock without visibility into cost drivers.
How you'd monetize
$29-99/mo SaaS dashboard or usage-based markup