Helicone vs Stainless: LLM Gateways Comparison
Compare Helicone and Stainless side by side. Both are tools in the LLM Gateways category.
Updated March 10, 2026
The short answer
Choose Helicone if extremely simple integration (one line of code).
Choose Stainless if automates SDK dev.
Want to compare Helicone and Stainless on your own traffic?
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Quick Comparison
| Category | LLM Gateways | LLM Gateways |
| Pricing | Freemium | paid |
| Best For | Developer teams who need visibility into their LLM usage, costs, and performance | AI companies and developers building API clients |
| Website | helicone.ai | stainlessapi.com |
| Key Features |
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| Use Cases |
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Pros & Cons: Helicone vs Stainless
- +Extremely simple integration (one line of code)
- +Open-source with self-hosting option
- +Generous free tier (100k requests)
- +Supports all major LLM providers
- −Advanced features require paid tiers
- −Data retention limited on free tier
- −Self-hosting requires technical expertise
- +Automates SDK dev
- +Type-safe code
- +Multi-language
- −Requires OpenAPI
- −Limited customization
Pricing: Helicone vs Stainless
- · 100k requests/month
- · Basic observability
- · 1-month retention
- · Community support
- · 1M requests/month
- · 6-month retention
- · Advanced features
- · Email support
- · Unlimited requests
- · Custom retention
- · SOC 2 compliance
- · Dedicated support
- · Core features
- · Advanced features
- · Custom
When to Choose Helicone vs Stainless
- LLM cost monitoring and optimization
- Production request debugging
- User-level usage tracking and rate limiting
About Helicone
Helicone is an open-source LLM observability platform providing monitoring, logging, and analytics for AI applications. The platform offers detailed insights into LLM requests, costs, latency, and user behavior with minimal integration overhead—just one line of code to get started. Helicone supports all major LLM providers and provides features like caching, rate limiting, prompt management, and user tracking. The platform is available as both open-source for self-hosting and as a managed cloud service with generous free tiers. Helicone helps teams understand and optimize their AI applications through comprehensive observability.
About Stainless
Stainless automatically generates SDKs from OpenAPI specs. Creates production-quality type-safe SDKs in multiple languages.
What is LLM Gateways?
Unified API platforms and proxies that aggregate multiple LLM providers behind a single endpoint, providing model routing, fallback, caching, rate limiting, cost optimization, and access control.
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