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Helicone

Helicone

Freemium

Open-source observability and gateway for LLM applications.

Best for: llm api observability via proxy, llm cost analysis and optimization

★★★★☆4.50 aggregate ratings

Verified by editorial·Last updated: May 2026·How we rank

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Helicone is in our catalog but the editorial team has not written a hands-on review yet. The verdict and scores below are auto-derived from public data (user ratings, pricing, feature coverage) rather than first-person testing.

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Editor's verdict

Helicone is one of the strongest freemium tools in its category, rated 4.5/5 by 0 users. Best for llm api observability via proxy and llm cost analysis and optimization. Standout: one-line proxy setup - fastest integration in category. Watch out: less depth than Langfuse on evaluation tooling. Has a free tier; paid plans start at $80/mo.

About Helicone

Helicone is the open-source LLM observability and gateway product that ships as a one-line proxy for OpenAI, Anthropic, and other LLM APIs. The trade-off Helicone optimizes for vs Langfuse is setup simplicity: change your API base URL to Helicone, and every LLM call gets logged with cost, latency, and prompt-response data. Beyond observability, Helicone offers caching, rate limiting, and prompt experimentation. Free tier covers 100K requests per month; paid tiers from 80 USD per month. Vs Langfuse: Helicone is faster to integrate (proxy approach); Langfuse has deeper LangChain integration and richer evaluation features. Y Combinator-funded, used by SkillUp, Cohere, Sequoia portfolio companies.

Pros & Cons

Pros

  • ✓One-line proxy setup - fastest integration in category
  • ✓Built-in caching and rate limiting
  • ✓Strong cost-tracking and analytics dashboards
  • ✓Free tier covers 100K requests/month
  • ✓Y Combinator-funded with strong customer signal

Cons

  • ✗Less depth than Langfuse on evaluation tooling
  • ✗Proxy approach adds latency layer
  • ✗Smaller mindshare than Langfuse
  • ✗Roadmap evolving fast - some features in beta

Best Use Cases

  • →LLM API observability via proxy
  • →LLM cost analysis and optimization
  • →LLM response caching
  • →Prompt experimentation and A/B testing
  • →Multi-provider LLM management

Categories

code-ai

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Pricing

Free$0 / mo
ProFrom $80 / mo

Pricing verified May 2026. Verify current pricing on the official site before purchase.

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Trust Stack

How we rank →

Editorial Score

4.5/5

Hands-on testing across 7 criteria

External Aggregate

4.5/5

No aggregate signal yet

Pricing Verified

May 2026

Re-verified against the official site every 90 days

Editorial score is independent of External Aggregate. User reviews appear separately below.

Decision shortcuts

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Editorial Scoring

How Helicone scores on our 7-criteria framework

See methodology →
Criterion
Weight
Score

Output Quality

Accuracy, polish, and usefulness of what the tool produces.

25%
4.5

Ease of Use

Onboarding friction, UI clarity, time to first useful result.

15%
5

Pricing Value

Output per dollar at the realistic monthly cost for a typical user.

15%
4.5

Feature Depth

Breadth and maturity of capabilities relative to category leaders.

15%
4

Integrations

Native integrations, API quality, and ecosystem coverage.

10%
4

Reliability

Uptime, output consistency, and battle-test through scale.

10%
4.5

Trajectory

Recent product velocity and momentum vs the category.

10%
4.5
Overall editorial score
100%
4.45/5

Scores are editorial assessments based on hands-on testing and verified user data. They do not reflect affiliate relationships. How we score.

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Frequently Asked Questions

Is Helicone free?▼

Helicone offers a free tier with limited features. Paid plans start from $80/month.

What is Helicone best for?▼

Helicone is best suited for: LLM API observability via proxy, LLM cost analysis and optimization, LLM response caching.

How does Helicone compare to alternatives?▼

Helicone holds a rating of 4.5/5 from 0 reviews. Browse our comparison pages to see detailed side-by-side breakdowns against similar tools.

What does Helicone cost?▼

Helicone starts at $80/month and includes a free tier. Pricing may vary by plan and region - always verify on the official site.

MytheAi Team, editorial team at MytheAi

Reviewed by

MytheAi Team

Editorial Team

The MytheAi editorial team tracks and reviews AI and SaaS tools. We built MytheAi out of frustration with pay-to-rank listicles and SEO-driven directories that prioritize ad revenue over honest guidance. Hands-on testing across 590+ tools to date.

·How we rank tools·X

Helicone Review (2026): Is It Worth It?

Helicone is a freemium tool with a free tier available. It holds a rating of 4.5/5 based on 0 reviews.

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