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LLM Evaluation Foundation Model Providers LLM Ops Observability Llms Foundation Models Agent Platforms Frameworks Building Tools Agent Platforms Orchestration AI Agents AI Agents Infrastructure

Helicone

✓ verifiedFreemium

LLM observability platform and AI gateway that lets teams route, log, debug and analyze their model requests.

100K visits/mo

Agenta

✓ verifiedFreemium

Open-source LLMOps platform uniting prompt management, evaluation and observability for teams shipping reliable LLM apps.

34K visits/mo

ApX Machine Learning

✓ verifiedFreemium

Tools, model specs and courses for LLM engineers-VRAM calculator, benchmarks and model directory-with free and paid tiers.

355K visits/mo

Glean

✓ verifiedPaid

Enterprise Work AI platform for company-wide search, an AI assistant and building governed agents across 250+ connectors.

3.2M visits/mo

chatglm.cn

4.4M visits/mo

Pricing

Hobby: Free (10,000 requests/mo)

Pro: $79/mo (unlimited seats)

Team: $799/mo (SOC-2 & HIPAA)

Free trial available

No public pricing

Basic: $0/mo (free forever)

Pro: $19/mo

Pro+: $59/mo

No public pricing

Core features

✦Request logging and LLM observability
✦AI gateway with routing and automatic fallbacks
✦Caching and rate limiting
✦Session, user and custom-property analytics
✦Prompts, playground and datasets for testing
✦Integrations with OpenAI, Anthropic, Azure and more

✦Prompt management as a single source of truth
✦Playground for prompt experimentation
✦Evaluation to measure changes before production
✦Observability and tracing for debugging
✦Collaboration across technical and non-technical roles
✦Open-source and self-hostable

✦VRAM/GPU-memory calculator for LLMs
✦LLM performance rankings and benchmarks
✦Model directory and comparison
✦AI/ML courses and learning roadmap
✦Calculator API and exportable cost reports
✦Engineering blog and guides

✦Enterprise search across company apps
✦Personal AI assistant grounded in work data
✦Agent builder, orchestration and governance
✦250+ connectors and actions
✦Enterprise knowledge graph and hybrid search
✦Security controls for scaling AI

✦Dialogue with GLM large model
✦AI search
✦AI drawing
✦AI reading
✦AI-generated video (沉思清影-AI生视频)
✦AI-generated PPT
✦Data analysis tools
✦Code assistance (代码速写)
✦Intelligent agents

Use cases

→Monitoring and debugging LLM apps
→Analyzing model usage and cost
→Caching responses to cut spend
→Managing prompts and testing datasets

→Version and manage prompts centrally
→Benchmark and evaluate LLM outputs
→Debug and trace production LLM issues
→Collaborate across a team on LLM apps

→Estimating GPU memory before training or inference
→Comparing and selecting LLMs
→Learning ML and LLM engineering
→Modeling production deployment costs

→Search across all company knowledge
→Answer employee questions with grounded AI
→Build and deploy custom AI agents
→Automate cross-system workflows

→Engaging in conversations with an AI model
→Generating images and videos using AI
→Creating presentations with AI assistance
→Analyzing data with AI tools
→Assisting with code development

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