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Alternatives to Promptfoo

30 tools that compete with or replace Promptfoo. Ranked by direct product-type match — not generic category overlap.

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What is the best Promptfoo alternative?

The best Promptfoo alternative today is LangSmith because it is a safe bet on our live viability checks, it has the widest real-user coverage of these options and AI engines read it more than any other option here; it also has a free tier.

Ranked on live viability checks, real-user mentions and how often AI engines read each tool — never pay-for-placement.

Lakera

Lakera

Runtime security layer that inspects what goes into your AI agents and controls what comes out

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Visit Lakera
Braintrust

Braintrust

Braintrust delivers agent observability with evals, pattern discovery, and trace-scale storage in one platform.

FreemiumTry
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LangSmith

LangSmith

LangSmith agent observability: trace, monitor, and evaluate every LLM run with SmithDB-backed trace search.

FreemiumTry
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Securiti

Securiti

Securiti unifies DSPM, data privacy automation, and AI security on one DataAI Command Graph.

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Invariant Guardrails

Invariant Guardrails

Invariant Guardrails enforces contextual security policies on AI agent tool calls and MCP server connections before they run.

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Visit Invariant Guardrails
Salt Security

Salt Security

Agentic AI security and MCP discovery that maps what AI agents can actually reach — from prompt to API to data.

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Visit Salt Security
Zenity

Zenity

AI agent security and governance that watches the decision point where context and intent collide

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Visit Zenity
Unbound

Unbound

Unbound is an Agent Access Security Broker that governs what AI coding agents can run, reach, and touch.

PaidTry
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Ai Bom

Ai Bom

Trusera's ai-bom discovers, catalogs, and governs every AI agent, model, and pipeline running across your enterprise infrastructure.

FreemiumTry
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Adrian

Adrian

Adrian is open-source runtime security that reads an AI agent's chain of thought and blocks malicious plans before they execute.

FreemiumTry
Visit Adrian
Mindgard

Mindgard

Mindgard is AI red teaming that reconnoiters, exploits, and retests vulnerabilities in production AI agents and models.

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Rogue

Rogue

Real-time guardrails, evals and red teaming for text-based LLM agents, running on small language model judges.

FreemiumTry
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Mcp Gateway

Mcp Gateway

Enterprise AI security platform that discovers agents and MCP servers, red-teams them, and enforces policy inline at the gateway.

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Visit Mcp Gateway
Hackagent

Hackagent

Open-source red-team toolkit for AI agent prompt injection, jailbreak and goal hijacking testing

FreeTry
Visit Hackagent
Agentic AI Top10 Vulnerability

Agentic AI Top10 Vulnerability

A free, vendor-neutral top 10 of agentic AI security risks, with a mitigation strategy attached to each threat.

FreeTry
Visit Agentic AI Top10 Vulnerability
Vorlon

Vorlon

Vorlon enforces AI agent runtime security — blocking policy-violating agent actions, masking sensitive data in transit, and restricting write access at the

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Visit Vorlon
Open AI o3 API

Open AI o3 API

OpenAI's closed early-access program for safety testing of its o-series reasoning models

FreeTry
Visit Open AI o3 API
Spectrum Labs

Spectrum Labs

AI red teaming and custom guardrails that hold your models, apps, and agents to your own written policy

Contact SalesTry
Visit Spectrum Labs
BotCity

BotCity

BotCity governs the Python scripts and AI agents running on your endpoints and in your pipelines

Contact SalesTry
Visit BotCity
Clawshell

Clawshell

Open-source OS-level runtime security that keeps real API keys and PII out of compromised OpenClaw and Hermes Agent processes.

FreeTry
Visit Clawshell
Tessl

Tessl

Tessl is an agent enablement platform for versioning, scanning, evaluating and governing coding agent skills.

FreemiumTry
Visit Tessl
Norm.ai

Norm.ai

Norm Ai encodes legal rules into verifiable AI agents for compliance review, DDQs, and RFPs at regulated institutions.

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Visit Norm.ai
ElevenAgents Guardrails

ElevenAgents Guardrails

ElevenAgents Guardrails adds real-time safety checks to voice agents — prompt-injection blocking, reply screening, and custom policy

FreemiumTry
Visit ElevenAgents Guardrails
Alma

Alma

Self-hosted AI agent governance with an access map, Cedar policy gates and a signed audit ledger for Claude Code, Codex and Gemini CLI

FreemiumTry
Visit Alma
Agentsh

Agentsh

agentsh enforces syscall-level policy for AI coding agents — file, network, and process control that holds no matter the prompt.

FreemiumTry
Visit Agentsh
Traccia

Traccia

Traccia traces, costs, evaluates and enforces policy on AI agents — an AI agent control plane you point at agents you already run.

FreemiumTry
Visit Traccia
ECC

ECC

ECC is the open-source agent harness operating layer that gives Claude Code, Codex, Cursor and Kimi shared skills, memory, planning and

FreemiumTry
Visit ECC
Agentseal

Agentseal

AgentSeal red-teams AI agents and audits MCP servers with 380+ adversarial attack probes from one CLI.

FreemiumTry
Visit Agentseal
Exogram

Exogram

Exogram is a permanent AI memory vault that gives ChatGPT, Claude and Gemini one shared, encrypted context graph.

FreemiumTry
Visit Exogram
Arcade AI

Arcade AI

Arcade AI is the MCP authorization runtime that governs every action your AI agents take.

FreemiumTry
Visit Arcade AI

Promptfoo alternatives compared

Promptfoo and its closest alternatives: pricing type, starting price, free tier, last verified date and viability band
ToolPricing typeStarting priceFree tierLast verifiedViability
PromptfooFreemiumCustom pricingYesSafe bet
LakeraContact SalesCustom pricingNoSafe bet
BraintrustFreemium$249/moYesSafe bet
LangSmithFreemium$39/seat/moYesSafe bet
SecuritiContact sales—NoSafe bet
Invariant GuardrailsContact sales—NoSafe bet
Salt SecurityContact sales—NoSafe bet
ZenityContact sales—NoSafe bet
UnboundPaid$20/user/mo billed annuallyNoSafe bet

First row is Promptfoo itself. Starting price is the cheapest paid plan on each vendor's published pricing; viability is our band, not a score.

Is there a cheaper alternative to Promptfoo?

Promptfoo does not publish a fixed monthly price we can compare against, so we do not name a cheaper option; the table shows each alternative's starting price.

Which Promptfoo alternative is free?

LangSmith has a free tier on its published pricing and is also our top pick. Free tiers change often; the "Last verified" column shows when we last checked each one.

Is Promptfoo still active?

Yes. Promptfoo is live and its listing was verified on 5 Nov 2026.

Frequently asked questions

What is the best Promptfoo alternative?

The best Promptfoo alternative today is LangSmith because it is a safe bet on our live viability checks, it has the widest real-user coverage of these options and AI engines read it more than any other option here; it also has a free tier.

Is there a cheaper alternative to Promptfoo?

Promptfoo does not publish a fixed monthly price we can compare against, so we do not name a cheaper option; the table shows each alternative's starting price.

Which Promptfoo alternative is free?

LangSmith has a free tier on its published pricing and is also our top pick. Free tiers change often; the "Last verified" column shows when we last checked each one.

Is Promptfoo still active?

Yes. Promptfoo is live and its listing was verified on 5 Nov 2026.

What are the best alternatives to Promptfoo?

We currently list 30 alternatives to Promptfoo: Lakera, Braintrust, LangSmith, Securiti, Invariant Guardrails. Each is ranked by direct product-type match rather than generic category overlap.

How do you choose which Promptfoo alternatives to show?

Alternatives are ranked by direct product-type match — tools that do the same job — not by shared category tags. Every listed tool is independently re-verified on a continuous cycle.

How this page is made: drafted with AI models from our own verified data — live site checks, current pricing and the public sentiment we gather from Reddit, Product Hunt, G2 and community forums — and checked against our editorial standards before it is published. Every claim carries its source and date. Nothing here is pay-for-placement. Read the full methodology.