Compare/Head to head

Codeaid vs CodeSignal

Same facts, side by side: starting price, free tier, MCP, API and what each one is actually built for.

Starting price

Codeaid

$129/mo 14 day free trial

A coding assessment platform built specifically for AI and machine-learning roles. Candidates work in real notebooks or GPU containers on messy datasets, and an AI interviewer builds the test and scores the work. The Team plan is $129/mo for 20 candidate invites a month, with a 14-day free trial.

Where Codeaid fits

  • AI startups hiring ML and generative AI engineers
  • Agencies pre-screening AI and ML candidates for clients
  • Companies upskilling software engineers into ML roles
  • Teams on Greenhouse, SmartRecruiters or Recruitee

CodeSignal

$79/mo

Skills assessments and AI interviewers on a credit meter. Hire Build is $79/mo billed annually, or $99/mo monthly.

Where CodeSignal fits

  • Small teams making first technical hires on Build
  • Growing orgs that need GTM assessments on Grow
  • Companies that want AI interviewers plus live tech screens
  • Enterprises that need SSO, RBAC, and validated content on Pro

At a glance

DetailCodeaidCodeSignal
Starting price$129/mo$79/mo
Free tier–No–No
Free trial14 day free trialNot on record
MCP server–No✓Yes
Public API–No✓Yes
Listed underAssessments, AI interviewingAssessments
CapterraNot enough reviews4.6 from 48 reviews

Where they pull apart

Codeaid

Stands out: General coding test platforms struggle to tell whether someone can actually train and debug a model. Codeaid tests that directly, with datasets too large to paste into an AI assistant, and agencies can use it to pre-screen ML candidates before sending them to clients.

Watch out: Twenty invites a month on the Team plan is tight for volume hiring, so credit packs or Enterprise may be needed. It is narrow by design: for general software engineering or non-technical roles a broader assessment library fits better.

Not the right fit for

  • High-volume hiring for general developer roles
  • Non-technical assessments

CodeSignal

Stands out: One credit pool for certified assessments and role-based AI interviewers, with Grow adding basic ATS hooks.

Watch out: Build includes 60 annual credits, or 5 a month on monthly billing. Extra credits are $20 each. ATS integrations and API access start on Grow.

Not the right fit for

  • Teams that only need a free coding-practice product
  • Buyers who need ATS integrations on the cheapest Hire plan

Pros and cons

Codeaid

  • Built for AI and ML roles specifically
  • Real notebooks and GPU environments
  • 14-day free trial
  • Only 20 invites a month on Team
  • Narrow focus beyond AI and ML roles
  • Only three ATS integrations

CodeSignal

  • Public Hire prices with annual 20% off
  • AI interviewers included on Build, not only Pro
  • Hosted MCP server plus API and webhooks
  • Build is light on credits (60/year or 5/month)
  • ATS integrations and API start on Grow
  • Pro plan is quote-only

What each one costs

Codeaid

$129/mo

Codeaid's Team plan is $129/mo, with 20% off on annual billing, and includes 5 users, 20 candidate invites a month, unlimited openings and interviews, 75 questions per interview, 2 custom interview templates and Greenhouse, SmartRecruiters and Recruitee integrations. Extra invites are sold in credit packs of 10, 50 or 100. A 14-day free trial is available. Enterprise, with unlimited users, invites and templates plus invoicing and premium support, is quoted. Confirm current terms on the vendor site.

Checked 13 Oct 2026

CodeSignal

$79/mo

Hire Build is $79/mo billed annually ($948/year, 60 credits) or $99/mo billed monthly (5 credits a month). Grow is $479/mo annual or $599/mo monthly. Pro is custom; extra credits are $20 each. Confirm current terms on the vendor site.

Checked 18 Sep 2026

Common questions

Is Codeaid cheaper than CodeSignal?
CodeSignal starts lower, at $79/mo against $129/mo for Codeaid. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try Codeaid or CodeSignal for free?
Neither carries a free tier on our listing. Codeaid offers a 14 day free trial.
Does Codeaid or CodeSignal have an MCP server?
CodeSignal ships a first party MCP server, so an AI assistant can work the product directly.

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Editorial listings, never paid rankings. Prices checked 13 Oct 2026. Confirm current terms on the vendor site. Spot an error?