
LLM Observability Tools 2026: 4 Types AI Engineers Get Wrong
The LLM observability category has 4 distinct tool types in 2026. Confusing a reverse proxy with an SDK tracer costs trace coverage — not just $59/mo.
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The LLM observability category has 4 distinct tool types in 2026. Confusing a reverse proxy with an SDK tracer costs trace coverage — not just $59/mo.

Cursor Composer 2 (March 2026): $0.50/1M input tokens, code-only training, and a cache economy that cuts agentic loop costs by 10x — 5 changes for devs.

CodeRabbit shipped chat commands, path instructions, Mermaid diagrams, and ticket-context reviews to GA in April 2026 — 5 features worth enabling at $15/seat.

Langfuse rebuilt experiments as a first-class concept on April 13, 2026. Here is what changes for LLM evaluation workflows and how to migrate this week.
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