Comparison · AI-native APM
Moda vs Raindrop
Raindrop is the most direct competitor — "Sentry for AI agents," $15M seed led by Lightspeed in Dec 2025. It ships default Signals (User Frustration, Hallucination, Refusal Spikes, Tool Failures, Context Loss, Infinite Loops) on top of trace/event capture, plus Topic Clustering, Trajectories, Issue Detection, custom signal authoring, and a free open-source local debugger (Workshop). The wedge against Moda is shape: Raindrop frames itself as APM-style monitoring on traces and events with custom-signal authoring as the primary workflow. Moda is self-improvement for AI agents on the harness layer — model-agnostic, with intent map, emergent intents, behavioral cohorts, and frustration root cause attributed to a specific harness component (prompt, tool, workflow, context, memory, eval, or model). The learnings live outside the model weights, so they are portable across models and adapt per user.
When to use Moda
When you want production conversations turned into a learning loop — automatic intent map, emergent intent detection, cohorts, and frustration root cause routed to the layer of the stack that needs to change (prompt, tool, workflow, context, memory, or model).
When to use Raindrop
When you want trace-level APM with default and customizable failure signals, a free local debugger, and Sentry-style alerting on agent events.
Updated
Feature by feature
Moda compared with Raindrop
| Capability | Moda | Raindrop |
|---|---|---|
| Product frame | Continual learning layer — closes the loop from production conversation to prompts, tools, workflows, memory, evals, and models. | AI-native APM — monitoring, error tracking, and alerting on agent events. |
| Intent clustering | Live hierarchical intent map; emergent intent detection ranks novel user requests. | Topic Clustering over events; not a continuously updated user-intent taxonomy. |
| Frustration handling | Root cause routed to a specific layer (prompt, tool, workflow, context, memory, model) with an agent counterfactual. | User Frustration is a default Signal; surfaces incidents and alerts, no counterfactual or layer-attribution. |
| Failure modes | Surfaces tool call failures, schema drift, agent path issues, model behavior shifts, and workflow loops as part of the learning loop. | Hallucination, Tool Failures, Context Loss, Refusal Spikes, Infinite Loops as default Signals; deeper modes via custom signal authoring. |
| Workflow output | Weekly learning reports ranked by impact, routed to Slack / Linear / CLI for coding agents (Claude Code, Cursor). | Signals, Issues, alerts in Slack; Trajectories and Deep Search for investigation. |
| Cohorts | Behavioral cohorts: see users by what they actually do; health scores per user. | Not provided as a first-class surface. |
| Ingest | Python + Node SDKs; provider integrations (OpenAI, Anthropic, Bedrock, OpenRouter, Azure, Vercel AI SDK). | TS / Python / Go / HTTP SDKs; Vercel AI SDK, Claude Agent SDK, OpenAI Agents, LangChain, Pydantic AI, Mastra, Bedrock, Vertex AI. |
| Open source | Hosted; OSS SDKs. | Hosted SaaS; open-source Workshop debugger (launched May 2026). |
| Pricing model | Workspace + volume-based; sales-led. | Startup $59/mo + $0.001/event; Pro $399/mo + $0.0007/event; Enterprise custom. |
Highlights
What the comparison surfaces
Learning loop vs APM
Raindrop tells you what broke; Moda tells you what to change next and which layer of the stack to change it in.
Conversation-semantic vs trace-shape
Raindrop clusters topics over events; Moda's intent map clusters over conversation segments and reorganizes as production traffic shifts.
Counterfactual root cause
Moda produces an explicit "what should the agent have done" counterfactual per frustration event and routes it to the right layer of the stack.
Frequently asked
Questions
Is Moda just Raindrop with a different label?
No. Raindrop frames itself as Sentry for AI agents — APM with default and custom failure Signals. Moda is the continual learning layer above: production conversations become a live intent map, emergent intent detection, behavioral cohorts, and frustration root cause routed to a specific layer of the stack with an agent counterfactual. The output is what to change next, not just what broke.
Does Raindrop do root cause analysis?
It surfaces Signals and lets you Deep Search / cluster topics, but it does not produce an agent counterfactual or attribute frustration to a specific layer (prompt, tool, workflow, context, memory, model). That is Moda's wedge.
Should I run both?
If you specifically need infra-style APM with alerting on tool errors and a free local debugger, Raindrop works well alongside Moda. Many teams keep one for trace-level alerting and add Moda for the conversation learning loop.
How does the pricing compare?
Raindrop is per-event ($0.0007–$0.001) plus a platform fee. Moda is workspace + volume-based and sales-led. The right pricing model usually tracks how chatty your agents are at the trace level versus how many conversations you ship.
What about framework coverage?
Both cover the major frameworks. Raindrop ships native SDKs across more agent runtimes today; Moda emphasizes provider-agnostic ingest via Python / Node SDKs and direct provider integrations, with OTLP available as a fallback.
See how Moda complements Raindrop.
Book a 30-minute walkthrough. We'll show your traffic in Moda end-to-end and where it fits next to the rest of your stack.