Know exactly what your
AI is costing you
A drop-in proxy for OpenAI & Anthropic that gives your team prompt-level cost visibility — without touching your data.
Spend tracked is rounded from blended average request costs.
Works with the providers you already use
The Problem
You're flying blind on AI costs
Your team is shipping AI features fast. But nobody knows which prompts are expensive, which teams are over-spending, or whether that “improved” prompt actually reduced costs.
AI Prompt Cost fixes that in 5 minutes — no code changes, no new SDK, just a URL swap.
Already used by engineering teams at
Features
Everything you need to control AI spend
Prompt-level cost visibility
See exactly which prompts are driving your AI spend, ranked by cost and request volume.
Team-level tracking
Break down costs by team for chargeback reporting and accountability.
Prompt versioning
Compare cost impact across versions side-by-side.
Feature-level grouping
Tag requests by feature to understand costs per product area.
Privacy-first by design
Only metadata is logged. Your prompt content never leaves your infrastructure.
Drop-in compatible
One URL change. No SDK. Works with the clients you already use. Your existing code works unchanged.
How it works
Up and running in 4 steps
No complex setup. No infrastructure changes. Just swap a URL and start seeing your costs.
Create your account
Sign up free. No credit card required. Takes 30 seconds.
Get your API key
Generate a proxy API key from the dashboard to authenticate your requests.
Change one URL
Point your OpenAI or Anthropic client to our proxy endpoint. That's the only code change.
See your costs
Open the dashboard and watch spend, trends, and breakdowns appear in real time.
No prompt content stored · No response logging · Async metadata only
Quickstart
Two lines of code. That's it.
Change your base URL and add a header. Your existing code works unchanged.
// Just change the base URL
const response = await fetch(
'https://aipromptcost.com/api/proxy/v1/openai',
{
headers: {
'Authorization': 'Bearer your_proxy_key',
'X-Provider-Key': 'sk-your_openai_key',
},
body: JSON.stringify({
model: 'gpt-4o',
messages,
_aipromptcost: { prompt_key: 'my-feature', version: 1 },
}),
}
);Use Cases
Built for real-world scenarios
See how teams use AI Prompt Cost to solve specific problems
Startup Scaling AI Features
Cost Control & Budget Protection
The Problem
A SaaS startup launches AI summaries, chat assistant, and content generation. Two weeks later, the OpenAI bill jumps 4x. No one knows which feature caused it.
How AI Prompt Cost Helps
- Identify highest-cost prompt_key
- See spend by feature tags
- Compare versions
- Track growth over time
Persona: CTO, Head of Engineering
Pain Point: “Where is this spend coming from?”
What teams are saying
Trusted by engineering teams
“We had no idea our summarization prompt was 3× more expensive than everything else combined. AI Prompt Cost made that obvious in the first hour.”
“Finance kept asking us to break down AI costs by team. We tried building it ourselves for two sprints. This took 5 minutes and the data is way more granular.”
“We were A/B testing prompts but had no way to compare costs between versions. Now we can see that our v3 prompt is 34% cheaper per request.”
“A junior dev accidentally changed max_tokens from 500 to 4000 on a Friday. We caught it Monday morning through the spend spike.”
“The privacy-first approach was the deciding factor for us. We're in healthcare and can't have patient data flowing through third-party logging.”
“We charge customers for AI features. Without per-feature cost tracking, we were basically guessing our margins. Turns out our chat feature was losing money.”
Pricing
Free during Beta
Bring your own API key and get full access to cost analytics, prompt management, and team dashboards at no cost.
Ready to see what's costing you?
Set up in 5 minutes. No credit card required.