Developer Tools

Helicone AI

Helicone is the open-source gateway for routing, debugging, and analyzing AI applications. 1-line integration to access 100+ models, full observability, cost tracking, and prompt analytics — all in one place. The world’s fastest-growing AI companies build on Helicone.

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helicone.ai

Verified API available Free tier

Quick facts
What is it	Helicone is the open-source gateway for routing, debugging, and analyzing AI applications. 1-line integration to access 100+ models, full observability, cost tracking, and prompt analytics — all in one place. The world’s fastest-growing AI companies build on Helicone.
Pricing	Freemium — from $79/mo
Free tier	Yes
Platform	Web Application
API	Yes
Best for	monitoring LLM API costs and usage, debugging problematic AI prompts and responses
Domain registered	2022

Data updated Aug. 1, 2026

What does Helicone AI do?

Helicone is a developer platform that acts as a proxy between your application and your Large Language Model (LLM) provider, such as OpenAI. It captures every API request and response, providing a centralized dashboard to monitor usage, track costs, debug problematic prompts, and analyze performance metrics like latency and errors. It’s essentially a powerful observability layer for anyone building with AI, giving you full visibility into how your LLM calls are performing.

What sets Helicone apart is its focus on practical, developer-centric features. It offers request caching to reduce redundant API calls and lower costs, user rate limiting to prevent abuse, custom logging for enhanced debugging, and cost-tracking charts that break down spending by model, user, or team. The platform is designed to integrate seamlessly, requiring just a simple change to your API endpoint and key, making it easy to add to existing projects without a major refactor.

This tool is a must-have for development teams and companies building production AI applications. It's invaluable for engineers who need to debug why a specific prompt is failing, product managers tracking the cost-per-user of AI features, and startups needing to monitor for unexpected usage spikes. Real-world use cases include identifying the most expensive API calls in a SaaS product, troubleshooting a sudden drop in response quality, and generating reports on LLM usage across different application features.

AI API Bug Reports Developer Tools Technical Specifications

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Key features

What makes it stand out

Real-time LLM request and response logging for full visibility

Cost analytics and tracking by model, user, and team

Request caching to reduce redundant API calls and costs

User rate limiting and abuse prevention controls

Custom logging and enhanced debugging tools for prompts

Who is Helicone AI for?

Who benefits most from this tool

monitoring LLM API costs and usage

debugging problematic AI prompts and responses

analyzing performance metrics for AI features

Pricing

Free tier available — start without a credit card

Hobby

Free

1 seats
10,000 requests
10 logs/min ingestion
1 storage GB
1 organizations
7 retention days
10,000 free requests
1 GB storage
1 seat, 1 organization
7 days retention
10 logs/min ingestion

Pro

$79.0/month

Everything in Hobby, plus:

unlimited seats
usage_based requests
10/min API calls
1000 logs/min ingestion
usage_based storage GB
1 organizations
30 retention days
Unlimited seats
Alerts & reports
HQL (Query Language)
1 month retention
1,000 logs/min ingestion
10 API calls/min

Team

$799.0/month

Everything in Pro, plus:

unlimited seats
usage_based requests
60/min API calls
15000 logs/min ingestion
usage_based storage GB
5 organizations
90 retention days
5 organizations
SOC-2 & HIPAA compliance
Dedicated Slack channel
3 months retention
15,000 logs/min ingestion
60 API calls/min

Enterprise

Custom

Everything in Team, plus:

unlimited seats
usage_based requests
1000/min API calls
30000 logs/min ingestion
usage_based storage GB
unlimited organizations
forever retention days
Custom MSA
SAML SSO
On-prem deployment
Bulk cloud discounts
Unlimited organizations
Forever retention
30,000 logs/min ingestion
1,000 API calls/min

Trust & presence

Domain Domain registered 2022

Gallery

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Helicone AI — pricing page — Pricing page

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