the short answer
Pick Future AGI if you need to test an agent before it has users, including simulated voice conversations, or want evals, a model gateway and runtime guardrails in one Apache-2.0 platform with a generous free tier. Pick Raindrop if you already have production traffic and want the sharpest tool for finding silent failures in it: plain-language Signals, ranked Issues in Slack and Experiments on logged cohorts, at $299 a month plus events. Raindrop does not block actions.
- Raindrop
- Signals, Stumbles and Issues, Triage Agent, Experiments. Hosted. Hobby free, Pro $299/month plus per event.
- Future AGI
- Simulation, evals, traceAI, Error Feed, gateway, Protect, prompt optimization. Apache-2.0 core.
- Before launch
- Raindrop: Workshop, a local debugger. Future AGI: multi-turn text and voice simulation.
- Acts at runtime
- Raindrop: no. Future AGI: block, warn, mask or log, through its gateway or SDK.
Before Launch and After Launch
Raindrop monitors AI products in production, and everything in it assumes real traffic: Signals that classify behaviors you describe in plain language, Stumbles (single failed runs) that recur into Issues ranked by severity, a Triage Agent that investigates root causes, alerts in Slack, and Experiments that compare cohorts of already-logged production events with confidence intervals. For the local loop it has Workshop, an MIT-licensed agent debugger and eval runner launched in May 2026.
Future AGI is a platform with six parts, open source under Apache-2.0 at its core since Q2 2026. Simulate runs multi-turn text and voice conversations against your agent. Evaluate has built-in evaluators ("50+ metrics", by its README) and Future AGI's own judge models, Turing Large, Turing Small and Turing Flash. Monitor is traceAI, on OpenTelemetry, plus Error Feed, generally available since July 2026, which groups failures and suggests root causes. Protect runs guardrails that block, warn, mask or log. The Agent Command Center is an OpenAI-compatible gateway to 100+ model providers. Optimize rewrites prompts with methods such as ProTeGi, PromptWizard and GEPA.
The overlap is production monitoring: both trace runs and both group failures. Everything else sits on one side. Raindrop has nothing to say about an agent before its first user, and it does not try to. Future AGI has a module for most things, and asks more of you to adopt them.
Side by Side
| capability | Raindrop | Future AGI |
|---|---|---|
| Production tracing | SDKs and OpenTelemetry | traceAI, OpenTelemetry |
| Grouping failures | Stumbles into ranked Issues | Error Feed |
| Checks from plain language | Signals, refined by labels | Built-in evaluators instead |
| Simulated conversations | Not offered | Multi-turn text and voice |
| Prompt optimization | Not offered | ProTeGi, GEPA and others |
| Comparing production cohorts | Experiments, 95% intervals | Not a published feature |
| Blocks or masks at runtime | Detects after the fact | Protect, via gateway or SDK |
| Alerts | Slack only | Monitors; limits vary by add-on |
| Open source | Workshop, MIT | Platform, Apache-2.0 plus EE |
| Self-host | Beta, select partners | Compose, VPC or air-gapped |
Future AGI wins most rows because it has most modules. The rows that should decide it are the ones about timing: can you test before users arrive, and can you learn from users once they do.
One Voice Agent, Three Weeks from Launch
A chain of dental clinics is launching a voice agent that books, moves and cancels appointments. It goes live in three weeks. After launch it will take a few thousand calls a day. Here is where each product earns its place across that timeline.
Weeks one to three: before any real caller
Future AGI simulates multi-turn voice conversations against the agent: the caller who changes their mind twice, the one who gives a date in the wrong format, the one who asks for a dentist who left. Its metrics and TURING judges score the runs, and Optimize proposes prompt changes for the failures. Raindrop has little to offer here beyond Workshop for debugging individual runs locally; its core features need production events.
Launch day
Future AGI can sit in the request path through its gateway, with Protect masking personal details and blocking disallowed tool calls in the traffic it sees. Raindrop starts ingesting real calls. If you have written a signal like "caller asked for a human and was not transferred", it begins counting from the first call.
Week six: the failure nobody simulated
Callers from one clinic keep getting booked into a room that closed. No simulation had that clinic's room list. Raindrop surfaces it as a recurring Stumble that becomes an Issue, ranked by severity, with a Slack alert. Future AGI's Error Feed groups the failures and suggests a root cause.
The fix
With Raindrop, ship the fix behind a flag and use Experiments to compare the old and new cohorts on the signal rate. With Future AGI, add the case to your simulation set and re-run it, so it never regresses.
The timeline makes the choice clearer than any feature table. Future AGI is the stronger tool before launch, and a capable one after. Raindrop is idle before launch and at its best after, when the question becomes which of a thousand small failures is costing you the most callers.
Personal Data: Redact What Is Stored, or Mask What Is Sent
Both products handle personal data, at different points. Raindrop's PII Guard redacts at ingestion, so names and numbers never land in Raindrop; its client-side version is regex-based and TypeScript-only, and edge PII redaction is listed under Enterprise. That keeps your monitoring data clean. It does not change what the agent sent to the model or the caller.
Future AGI's Protect acts on the traffic itself. It runs guardrail checks such as PII detection and prompt-injection detection on text, image and audio, and can mask, block, warn or log, either in the gateway or wherever your code calls its SDK. Its pricing page includes built-in guardrails on every tier. For the dental agent, that is the difference between "the monitoring vendor never saw the patient's phone number" and "the model never saw it either".
If you need a signed HIPAA business associate agreement, Future AGI lists a HIPAA BAA on its Scale add-on at $750 a month. Raindrop's plans page does not mention HIPAA; ask before you send it health data.
What Each Asks You to Adopt
Raindrop asks for an SDK or an OpenTelemetry exporter and a Slack workspace. It observes your agent from beside it rather than sitting in the request path, so adopting it adds no hop to a live call. The trade is that Slack is the only documented alert channel, and self-hosting is a beta for select partners.
Future AGI asks for more, in return for more. Its runtime controls need your model traffic routed through the Agent Command Center, or Protect SDK calls in your code, which makes it part of the request path. Self-hosting is Docker Compose only, with Helm charts on the roadmap; the requirements page lists PostgreSQL, ClickHouse, Redis, Temporal, MinIO and a code executor that runs in privileged containers, and the repository carries a LICENSE-EE file under which code in its ee/ directories needs an Enterprise licence key or a Future AGI Cloud plan in production. Its own issue tracker is candid about the rough edges of that stack, including a ClickHouse config crash-loop (#1540) and missing gateway logs (#1060). The managed service avoids all of that.
Where Each One Is Stronger
- Raindrop: turning production noise into a short list. Stumbles, severity-ranked Issues and the Triage Agent are built for the week-six problem above, when there are thousands of runs and a handful of failures that matter.
- Raindrop: measuring a change in production. Experiments compare logged cohorts before and after a model, flag or other change, with confidence intervals.
- Raindrop: less to adopt. An SDK or exporter and a Slack workspace, with nothing added to the request path.
- Future AGI: testing before users exist. Simulated conversations, including voice, and synthetic datasets.
- Future AGI: acting on traffic. Protect and the gateway scanners can block, warn, mask or log in real time.
- Future AGI: ownership and price of entry. An Apache-2.0 core you can self-host, unlimited seats, and a free tier large enough for a real pilot.
Some teams will want both: Future AGI's simulation and guardrails on the road to launch, and Raindrop's signals once the traffic is real. The products overlap little enough that running both is not wasteful, though it is two vendors to put through a security review.
Pricing: Two Different Shapes
| Raindrop | Future AGI | |
|---|---|---|
| Free | Hobby: 1,000 events a month; ingestion stops at the cap | 50GB storage, 2K AI credits, 100K gateway requests, 1M text-simulation tokens, 60 voice minutes, 30-day retention, unlimited seats |
| Beyond free | Pro: $299/month plus $0.003 per event to 1M, then $0.002 | Pay-as-you-go: from $10 per 1K AI credits, $5 per 100K gateway requests, $0.08 per voice minute |
| Security and compliance | SSO/SAML, audit logs, edge PII redaction on Enterprise | Boost $250/mo: SOC 2 Type II, OAuth SSO. Scale $750/mo: HIPAA BAA, SAML SSO, SCIM |
| Enterprise | Custom | $2,000/mo add-on, or custom |
Two worked examples, every assumption stated. Raindrop Pro at 200,000 events a month is $299 + $600 = $899. Future AGI, for 500 simulated four-minute voice calls in a month, is 2,000 minutes, less 60 free, times $0.08 at the listed starting rate: $155.20, before any other usage. They are not comparable bills because they buy different things, which is the point of this page.
Future AGI's free tier is the more generous of the two by any measure, and its unlimited seats matter for larger teams. Raindrop's free tier is a trial in practice: it stops ingesting at 1,000 events and keeps Issues and Experiments in preview. One caution on Future AGI: its pricing page and enterprise page do not agree on every SLA figure and which add-on gates what, so confirm the tier you need in writing.
Which to Choose
- Choose Future AGI when you need to test an agent before it has users, especially a voice agent, or want evals, a gateway and runtime guardrails from one open-source platform with a generous free tier.
- Choose Raindrop when you already have real traffic, want the sharpest tool for finding and ranking silent failures in it, and want to compare logged cohorts before and after each fix.
- Choose Failproof AI if your agents are coding agents such as Claude Code, Codex or Cursor and you need a risky command blocked at the agent hook before it runs, without routing traffic through a model gateway.
FAQ
Can Raindrop test an agent before launch?
Only in a limited way. Raindrop's platform features, Signals, Issues and Experiments, work on production events. Its open-source Workshop, MIT-licensed and launched in May 2026, is a local agent debugger and eval runner for individual runs. Future AGI offers simulated multi-turn text and voice conversations for pre-launch testing.
Does Future AGI have anything like Raindrop Experiments?
Not as a published feature we found. Raindrop Experiments compare two cohorts of already-logged production events, defined by model, feature flag, property, tool or date range, and report 95% confidence intervals and p-values on signal rates; they do not split or route traffic. Future AGI compares versions through simulation and evaluation runs, and optimizes prompts with methods such as ProTeGi and GEPA.
Which one masks personal data?
Both, at different points. Raindrop's PII Guard redacts personal data at ingestion, so it is not stored in Raindrop; edge redaction is an Enterprise feature. Future AGI Protect can mask personal data in live traffic, through its gateway or SDK, before it reaches the model. The first protects your monitoring data; the second protects the request.
Is Future AGI free to self-host?
The core platform is Apache-2.0 and self-hosts with Docker Compose, the only supported path today; its requirements page lists PostgreSQL, ClickHouse, Redis, Temporal, MinIO and a code executor. Code under the repository's ee/ directories falls under LICENSE-EE and needs an Enterprise licence key or a Future AGI Cloud plan in production. Telemetry is on by default, per the README, and turns off with FUTURE_AGI_TELEMETRY_DISABLED=1.
Get Started
Failproof AI is free to start. It finds recurring failure modes across agent sessions using code-based and LLM-based evaluations, groups the evidence into findings, and recommends fixes. Bring the eval suite you already have, alert the right owner when behavior drifts, and turn a tested fix into a policy that prevents the failure from recurring. See pricing for the tiers.
Sources
Checked against each vendor's own site and docs on 2026-09-14. Products change; if a detail here is out of date, tell us at support@befailproof.ai.
- Raindrop homepage
- Raindrop docs: Signals
- Raindrop docs: Experiments
- Raindrop docs: Alerts
- Raindrop docs: Plans
- Raindrop docs: PII redaction
- Raindrop: Thoughts on Evals
- VentureBeat on Raindrop Workshop
- Future AGI homepage
- Future AGI pricing
- Future AGI enterprise
- Future AGI on GitHub
- Future AGI docs: Protect
- Future AGI docs: prompt optimization
- Future AGI docs: evaluator models
- Future AGI docs: self-hosting requirements
- Future AGI Q2 2026: open source