Useful LLM logging and cost tracking with a free tier, but since Mintlify bought it the service is in maintenance mode.

Kenning's take

What it does

Helicone sits between an app and its AI model providers to log requests, track cost and debug problems. It also offers caching, rate limits, automatic fallbacks, prompt management and datasets. Mintlify acquired Helicone in March 2026, and the service now runs in maintenance mode with security fixes and new models still shipping.

• Request logging and session tracing
• Cost and user analytics
• Caching, rate limits and fallbacks
• Prompt playground and datasets
• HQL query language and alerts

Who it suits. Developers and AI teams who need to monitor and debug LLM calls in production.

Key facts

Category

Developer tools

Made by

Helicone, Inc. (acquired by Mintlify)

Based in

United States

Launched

2023

How to get it

self-serve sign-up with a free Hobby plan; Enterprise through sales

Works on

Web, API

Free plan

yes, Hobby plan with 10,000 requests a month

API price

usage-based on top of plan; 10K requests free

Pricing

Plan	Price	Billed
Hobby	$0	month
Pro	$79	month
Team	$799	month
Enterprise	Custom pricing	custom

source

FAQ

Facts from the maker's own pages and the sources listed. Checked 2026-10-11.