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Modelmetry pricing, features, company info, and alternatives

A factual product page for Modelmetry as an LLM guardrails and observability platform.

Last updated April 2026 ยท Pricing and features verified against official documentation

Categories Coding & Development
Starting price $0.00/month
Company Modelmetry
Verified Apr 26, 2026

Pricing

Current public pricing tiers on file for Modelmetry, last verified Apr 26, 2026.

Forever Free

$0.00 / month

Includes 500 checks, 500 spans, 1 team member, and unlimited analytics, evaluators, traces, and findings.

Small

$29.00 / month

Includes 10,000 checks, 10,000 spans, and 2 team members.

Large

$99.00 / month

Includes 200,000 checks, 200,000 spans, 10 team members, and custom RBAC.

What You Can Do With It

The main capabilities that shape how people use Modelmetry today.

Runs evaluators for jailbreaks, prompt injection, groundedness, PII leakage, JSON validation, and other output checks.

Combines guardrails, observability, traces, spans, metrics, findings, and automations in the same product.

Offers configurable evaluators and instances so teams can adapt checks to specific payloads and policies.

Ships JavaScript and Python SDKs plus programmatic API-key access for instrumentation.

Best For

Who Modelmetry is most clearly built for.

Developers who want runtime guardrails and observability for LLM features in the same platform.

Teams that need configurable evaluators for prompt injection, hallucination, PII, or schema validation.

Organizations that want programmatic instrumentation through SDKs rather than a UI-only review workflow.

Platforms

Where you can use Modelmetry today.

Web

JavaScript SDK

Python SDK

Integrations

Notable connected tools and ecosystem hooks for Modelmetry.

OpenAI

Anthropic

Google AI

AWS Bedrock

Azure AI

Privacy Notes

Publicly stated data-handling notes that matter when evaluating Modelmetry.

Modelmetry says it stores inputs and outputs so users can review them alongside metrics and scores.

The homepage also says Modelmetry does not access payloads on a customer's behalf unless the customer authorizes it.

The secrets documentation says secrets are encrypted at rest and only decrypted when used to authenticate with external services.

Access

How to integrate or build around Modelmetry.

Public API

Yes

Docs

Available

Alternatives

Other tools worth considering alongside Modelmetry.

LangSmith

Framework-agnostic platform for observability, evaluation, and deployment of AI agents and LLM apps.

Helicone

LLM gateway and observability platform for routing, debugging, and cost tracking across model providers.

Braintrust

AI observability and evaluation platform for tracing, scoring, and improving production AI applications.

Arize Phoenix

Open-source AI observability and evaluation platform for tracing, prompt iteration, and experiments.

Product Snapshot

Modelmetry is an LLM guardrails and observability platform for checking prompts, outputs, and traces against safety and quality rules. The public site emphasizes evaluators, configurable guardrails, traces, metrics, and SDK-based instrumentation.

What You Can Do With It

Why It Stands Out

It focuses on runtime guardrails and evaluator-driven checks rather than only trace collection or offline experimentation.

Tradeoffs To Know

Sources
  1. modelmetry.com/pricing
  2. modelmetry.com/legal/terms
  3. modelmetry.com
  4. docs.modelmetry.com/platform/evaluators
  5. docs.modelmetry.com/platform/api-keys
  6. docs.modelmetry.com/platform/secrets
  7. docs.modelmetry.com