Helicone logs and routes. CostSlice is OpenAI cost per customer.
Helicone is the right tool if you want a gateway. CostSlice is the right tool if the product is already on OpenAI and you need cost per customer so you can change a price.
Helicone is an AI gateway. It logs. It can cache. It can route across providers. That is a real product.
CostSlice is OpenAI-only. Pass-through. Completions still go to OpenAI with your OpenAI API key. We do not store prompt or completion bodies. We tag tenant and feature and show a customer P&L.
| Helicone | CostSlice | |
|---|---|---|
| Kind | Gateway | Pass-through + customer P&L |
| Prompt bodies | Can log | Never stored |
| Providers | Many | OpenAI only |
Privacy angle: without storing prompts. vs Langfuse. vs LiteLLM. Demo: sample P&L.
Worked example: acme-health clinical summaries at −101% is a price decision. You do not need Helicone’s prompt log to see that row. You need cost versus the $2,400 plan.
Starter is free. No credit card. Operator: Media Yard LLC, PO Box 73, Pennsauken, NJ 08110. hello@costslice.com
Questions
- Is Helicone an AI gateway?
- Yes. Helicone logs traffic, can cache, and can route across providers. See helicone.ai. CostSlice does none of that.
- Does CostSlice store prompts?
- No. We meter tagged usage. We do not keep prompt or completion bodies.
- Do I keep my OpenAI API key?
- Yes. CostSlice never stores it. There is no virtual key.