Side-by-side

Weights & Biases vs Helicone

Weights & BiasesHelicone

Bottom line: Weights & Biases for mL and AI teams needing mature experiment tracking; Helicone for teams wanting simple, cheap LLM logging.

	Weights & Biases The AI developer platform for experiment tracking and LLMOps. Visit	Helicone Open-source LLM observability and AI gateway in one line of code. Visit
Votes	0	0
Pricing	Freemium	Freemium
Category	Coding	Coding
Tags	mlopsllmopsexperiment-trackingllm-observabilityevaluation	llm-observabilityai-gatewayopen-sourcemonitoringcaching
Best for	ML and AI teams needing mature experiment tracking Teams shipping LLM apps that need tracing and evaluation Research groups and enterprises with existing W&B workflows	Teams wanting simple, cheap LLM logging Developers self-hosting an open-source gateway Cost and usage monitoring across providers
Pros	Industry-standard, mature experiment tracking with a large user base Weave gives low-friction LLM tracing with one decorator plus rich evals Covers both classic ML and modern LLMOps in one ecosystem Pre-built safety and quality scorers and guardrails out of the box Genuinely useful free tier for individuals and a strong academic program	Extremely easy integration via a one-line base-URL swap Open source under Apache 2.0 and free to self-host Tiny Docker image that runs almost anywhere Gateway features like caching, failover, and rate limiting cut cost and improve reliability Generous free tier of 10,000 requests per month
Cons	Non-commercial restriction on the free tier limits business use New 2026 usage-metered billing makes costs harder to predict A team-size threshold pushes growing teams into custom Enterprise quickly Enterprise seat pricing is high per third-party estimates Only the Weave SDK is open source; the backend is proprietary and SaaS-first	Product is in maintenance mode after the Mintlify acquisition, with no roadmap Long-term hosted-service viability is uncertain and migration may be needed Usage-based overages mean the Pro price is a floor, not a cap Short retention on lower tiers (7 days free, 30 days Pro) Large price jump from Pro to Team for compliance features

Comparison generated from each tool's listing. Add or remove tools above to change it.