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Head-to-head · LLM Observability Tools

LangWatch vs Helicone

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score LangWatch #7 in LLM Observability Tools 8.8/10 Free plan Free plan✓ 6 of 6 features Visit LangWatch
Helicone #9 in LLM Observability Tools 8.6/10 Free plan · 7-day trial Free planFree trial✓ 6 of 6 features Visit Helicone

LangWatch leads on 0 checks, Helicone on 0, and 7 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreLangWatch · 8.8/10
  • Free planboth
  • Free trialonly Helicone

LangWatch scores higher on our rubric for llm observability tools: 8.8 against 8.6 out of 10; our editors rank them #7 and #9.

LangWatch is the better fit for teams needing affordable agent and RAG visibility. Helicone is the better fit for teams wanting observability plus an LLM gateway.

  • LangWatch fits best

    Teams needing affordable agent and RAG visibility

  • Helicone fits best

    Teams wanting observability plus an LLM gateway

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature LangWatch 8.8/10 Visit ↗ Helicone 8.6/10 Visit ↗
At a glance
Editor score 8.8 8.6
Ranking #7 in LLM Observability Tools #9 in LLM Observability Tools
Best for Teams needing affordable agent and RAG visibility Teams wanting observability plus an LLM gateway
Pricing model Free plan + paid Free plan + paid
Starting price €29/seat/mo $79/mo
Free plan ✓ ✓
Free trial — 7 days
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web, Linux Web
Support Community, Live chat, Docs Email, Community, Docs
Compliance SOC 2, ISO 27001, GDPR, 2FA SOC 2, HIPAA, SSO/SAML
Integrations 26+ integrations 10 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features LangWatch 6/6 · Helicone 6/6
LLM tracing ✓ ✓
LLM evaluations ✓ ✓
Prompt management ✓ ✓
Agent tracing ✓ ✓
Retrieval tracing ✓ ✓
Token cost tracking ✓ ✓
Specs
Deployment options Both Both
Our review
Pros
  • Nested agent tracing with execution graphs and cost tracking
  • Evaluations, guardrails, simulations, and prompt versioning in one platform
  • Broad SDK, framework, OpenTelemetry, and self-hosted deployment support
  • Logs requests, traces, prompts, agents, vector databases, and costs
  • OpenAI-compatible gateway supports 100+ models and multiple providers
  • Cloud and Docker-based self-hosted deployment options
Cons
  • Developer includes 50k events monthly and 14-day data access
  • Enterprise capabilities require a custom plan
  • The feature set may exceed the needs of teams wanting basic tracing only
  • Pro and Team plans add usage-based pricing to monthly subscriptions
  • Hobby is limited to 10,000 requests, 1 GB storage, 1 seat, and 1 organization
  • Enterprise features use custom-built packages and custom commercial terms
Our verdict

LangWatch is an LLM engineering and observability platform for teams building AI agents and applications. It records LLM and agent traces with nested spans and execution graphs, tracks tokens, model costs, and latency, and captures RAG…

Read the review →

Helicone is an LLM observability platform and AI gateway for developers and teams building AI applications. It routes, logs, traces, and analyzes model requests through dashboards for requests, sessions, users, prompts, datasets, alerts,…

Read the review →
  1. LangWatchLLM Observability Tools 8.8Free plan
  2. HeliconeLLM Observability Tools 8.6Free plan · 7-day trial

Strengths and trade-offs

  • LangWatch — where it wins

    • Nested agent tracing with execution graphs and cost tracking
    • Evaluations, guardrails, simulations, and prompt versioning in one platform
    • Broad SDK, framework, OpenTelemetry, and self-hosted deployment support

    Where it doesn't

    • Developer includes 50k events monthly and 14-day data access
    • Enterprise capabilities require a custom plan
    • The feature set may exceed the needs of teams wanting basic tracing only

  • Helicone — where it wins

    • Logs requests, traces, prompts, agents, vector databases, and costs
    • OpenAI-compatible gateway supports 100+ models and multiple providers
    • Cloud and Docker-based self-hosted deployment options

    Where it doesn't

    • Pro and Team plans add usage-based pricing to monthly subscriptions
    • Hobby is limited to 10,000 requests, 1 GB storage, 1 seat, and 1 organization
    • Enterprise features use custom-built packages and custom commercial terms

More comparisons

All LLM observability tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update