Helicone vs LaunchDarkly

Helicone

LaunchDarkly

Helicone · 16 features

• Alerts — Thresholds on error rate, latency, cost, usage. Pro+.
• Async Logging — Log AFTER the LLM call via SDK — zero added latency.
• Cost Tracking — Automatic cost calculation per call by provider/model.
• Dashboard — Request tables, aggregate metrics, cost breakdowns.
• Evaluators — LLM-as-judge + custom evaluators on runs.
• Experiments — A/B test different models/prompts.
• HQL (SQL over traces) — Query your logged data with SQL. Pro+.
• PII Redaction — Automatically scrub emails, credit cards, etc. from logs.
• Prompt Caching — Cache identical requests → save money.
• Prompts & Versions — Store + version + A/B test prompts.
• Proxy Mode — 1-line integration via base URL swap. Captures all requests.
• Rate Limiting — Per-user + per-key rate limit policies.
• Reports — Scheduled email reports with KPIs.
• Self-Hosting — Docker + k8s deployment.
• Sessions — Group related calls (chat sessions, agent runs).
• User Metrics — Per-user cost + usage segmentation.

LaunchDarkly · 15 features

• AI Configs — Manage AI prompts, models, and parameters as flags.
• Approvals — Require co-sign before flag changes in prod.
• Audit Log — Every change logged with user + timestamp.
• Auto Pause/Rollback — Guardrail metrics auto-revert a bad release.
• Code References — Scan code for flag references + stale flag cleanup.
• Contexts — Multi-context targeting: user + organization + device in one evaluation.
• Experimentation — A/B/n testing with stat significance. Bayesian + frequentist.
• Feature Flags — Boolean, multivariate (string/number/JSON) flags with targeting rules.
• Observability — Logs + traces + errors linked to flag changes.
• Relay Proxy — Self-hosted evaluation proxy for compliance / low-latency.
• Release Pipelines — Progressive rollout workflows with guards + approvals.
• SAML / SCIM — Enterprise SSO + SCIM provisioning.
• Session Replay — Frontend session recordings tied to flag exposure.
• Targeting Rules — Rule-based targeting on user attributes, country, device, custom contexts.
• Workflows — Scheduled flag changes + conditional workflows.