Gateway plus observability — not just logging.
Helicone is an excellent observability tool, but it is not a gateway, and since it was acquired by Mintlify in March 2026 it has been in maintenance mode: security patches, new models, and bug fixes keep shipping, but active feature development has ended (per Helicone's own announcement). Migrating to NemoRouter is additive: keep your observability sinks (Langfuse, Datadog, S3, and Slack callbacks all still work) and gain the request-path enforcement Helicone never shipped: hard 402 budgets and inline PII redaction. Every claim below about Helicone cites its public docs and is dated.
Stack consolidation
- Tools collapsed into one
- 4 → 1
- Provider keys to manage
- 0
- Logging callbacks
- 4
- Pro platform fee
- 0%
Routing · observability · guardrails · billing
We hold every credential — no BYOK
Langfuse · Datadog · S3 · Slack
Pro ($50/mo or $500/yr) — observability on every plan
The capability matrix
Helicone excels at observability. NemoRouter ships observability plus everything else needed to run LLM workloads in production. Every marker is sourced below.
Comparison · sources verified July 2026
| Capability | NemoRouter | Helicone |
|---|---|---|
| Multi-provider routing gatewayRoutes requests across providers under one endpoint | 240+ models240+ models7 | Not available1 |
| Single managed API keyOne key for every model, no provider accounts | Included7 | BYOK requiredBYOK required2 |
| Request logging | Included | Included |
| Analytics dashboardSpend, latency, usage breakdowns | Included | Included |
| Logging callbacksForward logs to external tools | Langfuse · Datadog · S3 · SlackLangfuse · Datadog · S3 · Slack7 | Webhooks / integrationsWebhooks / integrations4 |
| Built-in guardrailsPII, prompt injection, content filter in the request path | Included | Not available4 |
| Role-based team management | 4 roles, every tier4 roles, every tier7 | Seats + access controlsSeats + access controls5 |
| Per-team & per-key budgetsHard spend caps enforced before the request leaves | Included | Rate limitsRate limits4 |
| Built-in credit billingStripe-backed credit ledger | Included | Not available6 |
| SSO / SAML | Every tierEvery tier7 | Team / Enterprise planTeam / Enterprise plan5 |
| Audit logs | Every tierEvery tier7 | Team / Enterprise planTeam / Enterprise plan5 |
| AlertingBudget + spend thresholds | Budget & spend alertsBudget & spend alerts7 | Available, plan-dependentAvailable, plan-dependent3 |
| Contractual uptime SLA | 99.9 %99.9 %7 | Enterprise planEnterprise plan5 |
Sources & methodology
Competitor rows reflect each vendor's publicly documented plans and docs as last checked in July 2026; each cell links the specific source. Where a competitor's pricing or plan structure is not public, the cell describes the structure rather than quoting a figure — we never invent competitor pricing. Found something out of date? Email sales@nemorouter.ai and we'll correct it.
- Helicone is an observability platform that proxies requests to log and analyze them. It is not a multi-provider routing gateway — you still point at your own provider endpoints. Helicone (all plans) · Helicone docs · verified July 2026
- Helicone requires your own provider API keys; it logs the traffic flowing through its proxy. There is no managed provider-key model. Helicone (all plans) · Helicone docs — integrations · verified July 2026
- Helicone publishes a free tier with paid plans (Pro / Team / Enterprise) priced by logged-request volume and seats. Specific figures vary by plan and are not quoted here. Helicone pricing tiers · Helicone pricing page · verified July 2026
- Helicone documents request logging, dashboards, caching, and rate limiting. It does not document content-safety guardrails (PII redaction, prompt-injection detection) run in the request path. Helicone (all plans) · Helicone docs — features · verified July 2026
- Helicone offers organization seats and access controls; SSO and advanced governance are associated with its Team / Enterprise plans rather than the free tier. Helicone Team / Enterprise · Helicone pricing page · verified July 2026
- Helicone surfaces cost analytics from logged usage. It does not ship a customer-facing credit billing system — providers bill you directly. Helicone (all plans) · Helicone docs · verified July 2026
- NemoRouter is a full gateway: it routes across providers, runs guardrails, enforces budgets, and ships observability — all on every tier. Platform fee is charged on top of provider cost. NemoRouter · NemoRouter pricing & docs · verified July 2026
Gateway versus observability layer
Helicone is a proxy that logs requests to your existing LLM providers. NemoRouter is the gateway itself. It routes, observes, protects, and bills, all in one service.
- Routes across every provider — not just logs them
- Guardrails, budgets, and RBAC live at the gateway layer
- One key, one bill — we hold every provider credential
With Helicone
Helicone sits as an observability proxy between your app and individual providers. You still manage every provider key, every bill, and every integration separately. Helicone observes requests but does not route them.
With NemoRouter
NemoRouter is the gateway itself. One API key, one bill, automatic routing across 240+ models. Observability, guardrails, team management, and budget controls all live at the gateway layer.
Frequently asked questions
Common questions about choosing NemoRouter over Helicone for your LLM infrastructure.
Is NemoRouter an alternative to Helicone?
It is a superset for most use cases. Helicone is an observability layer that sits between your app and an LLM provider to log and analyze requests. NemoRouter is a full LLM gateway that routes requests across 240+ models, includes built-in guardrails, team management, budget controls, and observability — all through a single API key and a single bill. If you only need observability on a single provider, Helicone is purpose-built for exactly that.
Does NemoRouter include observability features like Helicone?
Yes, and it is a genuine peer comparison. NemoRouter includes a full observability suite: request logging with search and filters, callbacks to Langfuse, Datadog, S3, and Slack, alerting on budget and spend thresholds, and data-policy controls. You get observability inside a full gateway. No separate tool required.
Can I use NemoRouter without managing provider API keys?
Yes. That is the core architectural difference. With Helicone you still need your own API keys for every provider and manage billing with each. With NemoRouter you get one API key (NEMOROUTER_API_KEY), buy credits, and call any model. We manage all provider keys, routing, and billing.
How does NemoRouter pricing compare to Helicone?
Helicone publishes a free tier with paid plans priced by logged-request volume and seats. NemoRouter pricing is simple: Flat 4% pay-as-you-go with no minimum fee, or 0% on Pro ($50/mo, $500/yr). All features are included on every plan. We do not quote Helicone's figures. See the sourced footnotes under the comparison table for the public pricing source.
Do I still need Helicone if I use NemoRouter?
For most teams, no — NemoRouter includes built-in observability (request logs, analytics, callbacks, alerts, and data-policy controls). If you already use Helicone and want to keep it, NemoRouter supports logging callbacks to external tools, so it can sit alongside. But the built-in observability replaces the need for a separate tool for most teams.
Is Helicone still actively developed after the Mintlify acquisition?
Helicone announced in March 2026 that it is joining Mintlify and that its product is now in maintenance mode: security updates, new-model support, and bug fixes continue, but active feature development has ended (per Helicone's own announcement). Nothing you rely on today stops working. If you want request-path enforcement it was never built to do (hard 402 budget caps and inline PII redaction), moving to NemoRouter is additive: your existing observability sinks (Langfuse, Datadog, S3, Slack) keep receiving logs through NemoRouter's callbacks.
Are all NemoRouter features really included on every tier?
Every product feature — guardrails, prompt management, A/B tests, evals, observability, RBAC, SSO/SAML, audit logs, per-team budgets, and priority support — ships on every tier. Tiers differ on exactly two axes: the platform-fee percentage (flat 4 % pay-as-you-go with no minimum fee, or 0 % on Pro) and the RPM/TPM guarantee. Nothing else is gated.
Stack consolidation · 5-minute migration
Why sign five contracts when one key runs them all?
NemoRouter replaces separate provider contracts, invoices, and rate limits: one OpenAI-compatible key for 240+ models, on a single bill. Less procurement, more shipping.
Want to keep Helicone as a logging callback? support@nemorouter.ai — we support custom callbacks alongside Langfuse / Datadog / S3 / Slack.99.9% SLA