Key features
Core capabilities each platform advertises.
- Multimodal evaluation (text, image, audio, video)
- OpenTelemetry-native tracing (TraceAI)
- Automated hallucination detection
- Prompt optimization
- Safety & compliance monitoring
Data not available
Updated March 27, 2026
Multimodal AI evaluation and observability platform with automated quality scoring across text, image, audio, and video outputs. Open-source TraceAI tracing built on OpenTelemetry.
Helicone is an open-source LLM observability and proxy platform. By adding a single line of code, developers get request logging, cost tracking, caching, rate limiting, and analytics for their LLM applications. Helicone supports all major LLM providers and offers both proxy and async logging modes. Popular with startups for its generous free tier and simple integration.
Core capabilities each platform advertises.
What each tool does well, and the limitations to keep in mind.
Pros
Cons
Pros
Cons
Choose Future AGI if you wantChoose if you want
Choose Helicone if you wantChoose if you want
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 1,000+ models through one gateway.
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