Comparison · Feature flags

Duelpilot vs LaunchDarkly

Feature management and release platform with experimentation, guarded rollouts and AI configs, for engineering teams. Duelpilot is A/B testing run by your own AI agent over MCP, with a person approving every launch. Both can be used by an AI agent over MCP. The biggest difference is who launches: in LaunchDarkly an agent can start tests itself, in Duelpilot a person approves (or an owner's autopilot policy, within guardrails). LaunchDarkly is priced by usage; Duelpilot is flat per site, without AI credits.

Last reviewed 2026-10-17Markdown version

At a glance

	Duelpilot	LaunchDarkly
MCP server or agent API	Yes Remote MCP server with 48 tools; OAuth for claude.ai and ChatGPT, bearer token elsewhere. source	Yes Hosted MCP at mcp.launchdarkly.com with OAuth. source
Your own agent designs variants	Yes Your agent designs 2–4 variants per idea, each with a preview and a device check. source	Yes create-flag, create-experiment, update-experiment. source
An agent can launch tests without a person	No A person approves every launch; an owner can switch on an autopilot policy with guardrails, never an agent. source	Yes Tools such as toggle-flag, update-rollout and start-experiment-iteration exist; where an environment requires approval, the agent can only file an approval request for a reviewer. source
Visual tests on any website	Yes One script tag; works with React/Next.js, Vue, Astro, SPAs and strict CSP. source	No No visual editor for website tests found. source
Server-side / code experiments	Yes Code plan only: your agent builds the arms in your repo behind Duelpilot flags. source	Yes Feature flags are the core product. source
Sequential (peek-safe) statistics	Yes mSPRT: always-valid p-values, safe to check daily. source	Yes Sequential testing available with the frequentist method. source
Charges for AI usage / credits	No The AI runs in your own agent's subscription. source	Partly AI runs (LLM tracking/evals): 5K/month included, then $5 per additional 1K runs. source
Free plan	No No free plan; your first test is free on every plan, Starter from €9/month. source	Yes Developer plan. source
Pricing model	flat per site	by usage

Duelpilot and LaunchDarkly side by side. Each cell links to its source.

Pricing

Duelpilot

Pricing: flat per site

Starter €9/month (€7 billed yearly); Pro €49/month (€39 billed yearly); Team €149/month (€119 billed yearly, 5 sites); Code €199/month (€159 billed yearly, 5 sites); Enterprise on request. No free plan; the first test is free on every plan.

source

LaunchDarkly

Pricing: by usage

Developer: $0/mo (100K experimentation MAU, 1 project); Foundation: $10 per service connection/mo and $8.33 per 1K client-side MAU/mo; Enterprise: custom; Guardian: add-on.

source

Prices as published by each vendor on the date checked, excluding VAT. Duelpilot has no visitor meters and no AI credits: the AI runs in your own agent's subscription.

What LaunchDarkly does well

Mature feature flags, targeting and guarded rollouts with automatic rollback (launchdarkly.com/pricing).
Hosted MCP server with around 170 tools that respects approval workflows (launchdarkly.com/docs).
Frequentist or Bayesian analysis, sequential testing and CUPED (launchdarkly.com/docs).

What Duelpilot does well

Your own agent does the research, design, checks and monitoring over MCP (48 tools); no AI bill from Duelpilot.
A person approves every launch: no MCP tool can approve, launch, pick a winner or ship.
Always-valid sequential statistics (mSPRT) with Holm correction, sample-ratio-mismatch checks and guardrail metrics.
Every variant gets a preview link and a site check on phone, tablet and desktop before anyone can approve it.
Flat price per site, published, from €9/month, and your first test is free on every plan; no visitor meters.

Where Duelpilot falls short

You need an AI agent that speaks MCP; without one there is no visual editor to build variants by hand.
No heatmaps or session recordings: Duelpilot counts results and sends variants to your own analytics.
A young product (2026): fewer integrations and a shorter track record than established tools.

Which one should you choose?

Choose LaunchDarkly if…

Choose LaunchDarkly if you need enterprise-grade feature management, progressive and guarded rollouts, and experiments on features your engineers ship.

LaunchDarkly website

Choose Duelpilot if…

Choose Duelpilot if what you want to test is the website marketing owns, without an SDK, run by your own AI agent at a flat price per site.

How Duelpilot works

Try Duelpilot with your own agent

Give your agent one line: set up Duelpilot for my site using /agents.md. It opens a workspace, installs and verifies the script, and drafts the first test; you approve what goes live. Try your first test free or see pricing.

Questions

Is LaunchDarkly an A/B testing tool for marketers?

It is a feature-management platform with experimentation for engineering teams; we found no visual editor for website tests. Duelpilot is built for website tests on any site.

Can an agent ship a flag in LaunchDarkly?

Its MCP has tools to toggle flags and change rollouts; in environments with approvals enabled (an Enterprise feature) the agent can only file a request. In Duelpilot no agent can launch or ship, on any plan.

Can Duelpilot do feature flags?

Only for A/B tests, on the Code plan: your own agent builds the variants behind Duelpilot flags in your repo. For general feature management LaunchDarkly is the better tool.

Sources

Last reviewed 2026-10-17. Spot an error? Tell us.

LaunchDarkly hosted MCP server (checked 2026-10-17)
Pricing | LaunchDarkly (checked 2026-10-17)
Analyzing experiments | LaunchDarkly (checked 2026-10-17)
Duelpilot instructions for AI agents (checked 2026-10-17)
Duelpilot overview (checked 2026-10-17)
Duelpilot pricing (checked 2026-10-17)