Alternatives to Promptfoo
30 tools that compete with or replace Promptfoo. Ranked by direct product-type match — not generic category overlap.
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
Runtime security layer that inspects what goes into your AI agents and controls what comes out
Braintrust
Braintrust delivers agent observability with evals, pattern discovery, and trace-scale storage in one platform.
LangSmith
LangSmith agent observability: trace, monitor, and evaluate every LLM run with SmithDB-backed trace search.
Securiti
Securiti unifies DSPM, data privacy automation, and AI security on one DataAI Command Graph.
Invariant Guardrails
Invariant Guardrails enforces contextual security policies on AI agent tool calls and MCP server connections before they run.
Salt Security
Agentic AI security and MCP discovery that maps what AI agents can actually reach — from prompt to API to data.
Zenity
AI agent security and governance that watches the decision point where context and intent collide
Unbound
Unbound is an Agent Access Security Broker that governs what AI coding agents can run, reach, and touch.
Ai Bom
Trusera's ai-bom discovers, catalogs, and governs every AI agent, model, and pipeline running across your enterprise infrastructure.
Adrian
Adrian is open-source runtime security that reads an AI agent's chain of thought and blocks malicious plans before they execute.
Mindgard
Mindgard is AI red teaming that reconnoiters, exploits, and retests vulnerabilities in production AI agents and models.
Rogue
Real-time guardrails, evals and red teaming for text-based LLM agents, running on small language model judges.
Mcp Gateway
Enterprise AI security platform that discovers agents and MCP servers, red-teams them, and enforces policy inline at the gateway.
Hackagent
Open-source red-team toolkit for AI agent prompt injection, jailbreak and goal hijacking testing
Agentic AI Top10 Vulnerability
A free, vendor-neutral top 10 of agentic AI security risks, with a mitigation strategy attached to each threat.
Vorlon
Vorlon enforces AI agent runtime security — blocking policy-violating agent actions, masking sensitive data in transit, and restricting write access at the
Open AI o3 API
OpenAI's closed early-access program for safety testing of its o-series reasoning models
Spectrum Labs
AI red teaming and custom guardrails that hold your models, apps, and agents to your own written policy
BotCity
BotCity governs the Python scripts and AI agents running on your endpoints and in your pipelines
Clawshell
Open-source OS-level runtime security that keeps real API keys and PII out of compromised OpenClaw and Hermes Agent processes.
Tessl
Tessl is an agent enablement platform for versioning, scanning, evaluating and governing coding agent skills.
Norm.ai
Norm Ai encodes legal rules into verifiable AI agents for compliance review, DDQs, and RFPs at regulated institutions.
ElevenAgents Guardrails
ElevenAgents Guardrails adds real-time safety checks to voice agents — prompt-injection blocking, reply screening, and custom policy
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
Agentsh
agentsh enforces syscall-level policy for AI coding agents — file, network, and process control that holds no matter the prompt.
Traccia
Traccia traces, costs, evaluates and enforces policy on AI agents — an AI agent control plane you point at agents you already run.
ECC
ECC is the open-source agent harness operating layer that gives Claude Code, Codex, Cursor and Kimi shared skills, memory, planning and
Agentseal
AgentSeal red-teams AI agents and audits MCP servers with 380+ adversarial attack probes from one CLI.
Exogram
Exogram is a permanent AI memory vault that gives ChatGPT, Claude and Gemini one shared, encrypted context graph.
Arcade AI
Arcade AI is the MCP authorization runtime that governs every action your AI agents take.
Promptfoo alternatives compared
| Tool | Pricing type | Starting price | Free tier | Last verified | Viability |
|---|---|---|---|---|---|
| Promptfoo | Freemium | Custom pricing | Yes | Safe bet | |
| Lakera | Contact Sales | Custom pricing | No | Safe bet | |
| Braintrust | Freemium | $249/mo | Yes | Safe bet | |
| LangSmith | Freemium | $39/seat/mo | Yes | Safe bet | |
| Securiti | Contact sales | — | No | Safe bet | |
| Invariant Guardrails | Contact sales | — | No | Safe bet | |
| Salt Security | Contact sales | — | No | Safe bet | |
| Zenity | Contact sales | — | No | Safe bet | |
| Unbound | Paid | $20/user/mo billed annually | No | Safe 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.