Head to head

Archytas AISpy vs Sleepwalker AI

Sleepwalker is a developer/agent-first, MCP+API+CLI-native tool billed in pay-as-you-go credits (€0.02 each) across four AI engines (ChatGPT, Perplexity, Grok, Gemini), built and maintained by a single developer with zero third-party reviews. Archytas AISpy is a free, downloadable desktop app with no API or MCP support, covering five engines (ChatGPT, Gemini, Claude, Perplexity, Google AI Overviews/AI Mode) using API keys the user supplies themselves, built by a named London SEO consultant, also with zero third-party reviews, but with a checkable company and founder.

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Sleepwalker and Archytas AISpy both check how a brand shows up across AI answer engines, but they are built for opposite workflows and even opposite definitions of "free." Sleepwalker is reachable natively through MCP, a REST API and a CLI, not a dashboard-only app, and bills purely pay-as-you-go: €0.02 per credit, a €5 minimum top-up (250 credits), and 10 free credits on signup with no credit card required. Archytas AISpy is a downloadable Windows/Apple Silicon macOS desktop app (a Linux build is "coming soon") that costs nothing to download or run, but requires the user's own OpenAI, Anthropic, Google and Perplexity API keys, so "free" means no software fee, not zero ongoing cost.

Engine coverage splits the two in opposite directions. Sleepwalker tracks four engines (ChatGPT, Perplexity, Grok and Gemini) and is the only one of the two that tracks Grok at all. Archytas AISpy covers five: ChatGPT, Gemini, Claude, Perplexity, and Google AI Overviews/AI Mode via a built-in DataForSEO integration. That adds Claude and Google's AI Overviews/AI Mode, both of which Sleepwalker skips entirely. Neither tool tracks Microsoft Copilot.

How each is reached and paid for is the real fork. Sleepwalker is hosted and programmatic-first: an MCP server lets an agent (for example Claude) trigger a visibility run directly inside a conversation, the REST API and CLI share the same credit balance, and a free, credential-free local command (`okf export`) serializes any page into structured markdown without touching a Sleepwalker account at all. Archytas AISpy has no API or MCP server today (the vendor lists MCP only as a roadmap item) and instead runs entirely locally, storing every result in a local SQLite database with no seat, brand or prompt limit, and adding features Sleepwalker doesn't have: a Fanout Query Mapping view of the follow-up searches an LLM runs before answering, scheduled recurring checks, and a "follow-on question" feature that re-queries a stored response with a second, independently-chosen model.

Cost structure and trust round out the contrast. Sleepwalker's credits bundle the AI-model cost into one line at a fixed €0.02 rate that Sleepwalker itself sets; Archytas AISpy has no software cost at all but pushes every model call directly onto the user's own OpenAI/Anthropic/Google/Perplexity billing (plus DataForSEO, for the Google AI surfaces), so its real running cost depends on what those providers charge, not on anything Archytas sets. Neither company has much third-party traction to point to yet: Sleepwalker has no G2, Capterra, Trustpilot or Product Hunt listing and is maintained by a single developer, Anton Gorobets, whose Netherlands-based GitHub repo carries 22 stars; Archytas AISpy shipped on Hacker News on 2026-06-30 to a single point and zero comments and is similarly absent from every review platform. The difference is verifiability: Archytas AISpy is built by a named, independently checkable operator: Michael Curtis, a 17-year SEO consultant, working through a registered UK company, Archytas Digital Technologies Ltd. Sleepwalker's single-maintainer claim, by contrast, rests only on an unverified GitHub profile.

How Archytas AISpy and Sleepwalker AI compare

Scroll across to compare every side. Feature names stay in view.One card per question, with every side answering it in turn.

Feature	Archytas AISpy Visit Archytas AISpy ↗	Sleepwalker AI Visit Sleepwalker AI ↗
Description	Free bring-your-own-API-key desktop app for tracking brand and domain citations across major AI answer engines.	AI visibility probes and page scoring exposed as an action layer for agents, scripts and a console.
Category	AI visibility monitoring	AI visibility monitoring, GEO & content optimization
Pricing	free	free, then €5 minimum top-up
API	No	Yes
Tags	AI OverviewsBrand monitoringChatGPTClaudeGeminiPerplexity	APIBrand monitoringChatGPTContent optimizationFree trialGeminiPerplexity
Pricing model	free	usage-based
Free tier	Yes	Yes
Platforms	macOS (Apple Silicon), Windows; Linux listed as 'coming soon' on the download page	-
Optimises your content	Partly	Yes
Technical AEO	Partly	No
Done-for-you service	Partly	No
Google AI Overviews	Yes	No
Google AI Mode	Yes	No
Claude	Yes	No
Grok	No	Yes
Brand sentiment	Yes	No
Recommendations	Partly	Yes
Wrong answers about you	Partly	No
Countries	-	Yes
How often it checks	Yes	Partly
API	No	Yes
MCP server	No	Yes
BI export	Yes	Partly
Limitations	No MCP server support, the vendor confirms it is only 'on the roadmap', so it cannot be wired directly into an agent workflow the way some rivals' MCP integrations can. (1 source) Requires the user's own paid API keys for every engine tracked (OpenAI, Anthropic, Google, Perplexity, plus DataForSEO for AI Overviews/AI Mode), 'free' means no software fee, not zero ongoing cost. (1 source) Linux build is listed as 'coming soon' and not yet available, desktop coverage today is Windows and Apple Silicon macOS only. (1 source)	Narrower engine coverage than some rivals in this directory: tracks ChatGPT, Perplexity, Grok and Gemini but not Claude or Microsoft Copilot, both of which LLM Pulse and AIclicks cover. (1 source) Credit-metered pricing makes ongoing cost harder to predict than a flat monthly plan, and the site publishes no calculator or estimated monthly cost for typical usage volumes. (1 source)

Who each one is for

Archytas AISpy

solo SEO/GEO consultants and small in-house marketing teams who want unlimited AI-visibility tracking across ChatGPT, Gemini, Claude, Perplexity and Google AI Overviews without a monthly subscription, and are comfortable supplying their own API keys

From Free

Sleepwalker AI

developers and AI-agent-building teams

From Free

Verdict: Archytas AISpy or Sleepwalker AI?

Want programmatic, agent-first access (MCP, REST API or CLI, wired into a workflow or an agent like Claude, paid purely by usage) and don't need Claude or Google AI Overviews coverage → Sleepwalker. Want a free desktop app you run yourself with your own API keys, need Claude and Google AI Overviews/AI Mode tracked, and don't need API/MCP access today → Archytas AISpy.

Visit Archytas AISpy ↗Visit Sleepwalker AI ↗

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Frequently asked questions

What is the main difference between Sleepwalker and Archytas AISpy?: Sleepwalker is a hosted, pay-as-you-go tool reachable natively through MCP, a REST API and a CLI, tracking ChatGPT, Perplexity, Grok and Gemini. Archytas AISpy is a free downloadable desktop app with no API or MCP support, tracking ChatGPT, Gemini, Claude, Perplexity and Google AI Overviews/AI Mode using the user's own API keys.
Which one is cheaper?: They don't compare directly on price. Sleepwalker charges its own fixed rate (€0.02 per credit, €5 minimum top-up, 10 free credits on signup), which bundles the underlying AI-model cost. Archytas AISpy's software is free, but every check runs on API keys the user supplies and pays for directly (OpenAI, Anthropic, Google, Perplexity, plus DataForSEO for Google AI Overviews/AI Mode), so its real cost depends entirely on those providers' own rates, not on anything Archytas charges.
Which tracks more AI engines?: Archytas AISpy, by one: it covers five (ChatGPT, Gemini, Claude, Perplexity, and Google AI Overviews/AI Mode) versus Sleepwalker's four (ChatGPT, Perplexity, Grok, Gemini). Sleepwalker is the only one of the two that tracks Grok; Archytas AISpy is the only one that tracks Claude and Google's AI Overviews/AI Mode. Neither tracks Microsoft Copilot.
Does either tool have an API or MCP server?: Only Sleepwalker. It ships an MCP server, a REST API and a CLI from the first signup, sharing one credit balance, plus a free local `okf export` command that needs no account. Archytas AISpy has no public API and no MCP server; the vendor confirms MCP support is "not yet" available, describing it as a roadmap item.
Which company is more established or better reviewed?: Neither has meaningful third-party traction yet. Sleepwalker has no G2, Capterra, Trustpilot or Product Hunt listing, and Archytas AISpy's Hacker News launch sits at a single point with zero comments. The difference is verifiability: Archytas AISpy is built by a named, checkable operator (Michael Curtis, a 17-year SEO consultant, via registered UK company Archytas Digital Technologies Ltd), while Sleepwalker's single-maintainer claim (Anton Gorobets) rests only on an unverified GitHub profile.

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