Compare/Kampala vs OpenAI GPT-4o Computer-Use API

AI tool comparison

Kampala vs OpenAI GPT-4o Computer-Use API

Which one should you ship with? Here is the side-by-side panel verdict, pricing read, reviewer split, and community vote comparison.

K

Developer Tools

Kampala

MITM proxy that reverse-engineers any app into a stable, callable API

Ship

75%

Panel ship

Community

Free

Entry

Kampala, built by Zatanna AI (YC W26), is a macOS proxy tool that sits between your applications and the internet, intercepts every HTTP/HTTPS request, and automatically reverse-engineers the underlying API. It traces authentication chains — tracking tokens, cookies, and session state — and replays flows on demand, preserving original TLS fingerprints so services can't distinguish API calls from the real app. The key insight is that almost every app that lacks a public API still has a private one — and it's usually more stable than the UI. Kampala targets automation engineers, QA teams, and AI agent builders who need reliable machine-readable access to apps that haven't opened their APIs. Setup is a local MITM cert install; no cloud proxy involved. Currently macOS-only with a Windows waitlist. The team emerged from YC's Winter 2026 batch with backing from Y Combinator. Pricing is in early access, with a free tier planned for solo developers and paid plans for teams building production automations.

O

Developer Tools

OpenAI GPT-4o Computer-Use API

Let GPT-4o click, scroll, and act inside a sandboxed browser

Ship

75%

Panel ship

Community

Paid

Entry

OpenAI's computer-use API gives GPT-4o the ability to control a sandboxed browser and desktop environment to complete multi-step tasks on behalf of users. Developers access it via a new `computer_use` tool parameter in the Chat Completions endpoint. It's aimed at automating web-based workflows without requiring custom integrations or scraping infrastructure.

Decision
Kampala
OpenAI GPT-4o Computer-Use API
Panel verdict
Ship · 3 ship / 1 skip
Ship · 3 ship / 1 skip
Community
No community votes yet
No community votes yet
Pricing
Free (early access)
Pay-per-token via OpenAI API (GPT-4o pricing); no separate tier — billed at standard GPT-4o input/output rates plus screenshot tokens
Best for
MITM proxy that reverse-engineers any app into a stable, callable API
Let GPT-4o click, scroll, and act inside a sandboxed browser
Category
Developer Tools
Developer Tools

Reviewer scorecard

Builder
80/100 · ship

This is the tool I've been building in-house at three different companies and never had time to productize properly. The auth chain tracing alone — tracking token refresh flows and session state automatically — would have saved me hundreds of hours. If it works as advertised, it's an instant ship for anyone doing integration work.

78/100 · ship

The primitive here is clean: you send a screenshot, get back an action (click, type, scroll), execute it, send the next screenshot. It's a loop you own, not a platform you adopt, and that's exactly the right DX bet — put the orchestration complexity on the caller, not inside a black-box agent runtime. The moment of truth is wiring up your first sandboxed browser session, and the docs actually walk you through it without requiring five env vars before hello-world. The specific decision that earns the ship: the `computer_use` parameter slots into the existing Chat Completions endpoint rather than spawning a new API surface, so there's no new auth, no new SDK, no new mental model to adopt — it composes with what you already have.

Skeptic
45/100 · skip

Terms of service violations are a real concern here. Most apps explicitly prohibit automated access through their private APIs, and companies like LinkedIn and Instagram have sued over exactly this pattern. The MITM cert requirement also opens a broad attack surface. Wait for a clearer legal stance before building production systems on this.

72/100 · ship

Direct competitors are Anthropic's Computer Use (which shipped this pattern first) and browser-automation layers like Playwright with vision models bolted on — so OpenAI is late, not pioneering. The scenario where this breaks is multi-tab stateful workflows: the model loses context across long action chains, and the sandboxed environment means anything requiring persistent login state or SSO is a pain to set up correctly. What kills this in 12 months isn't a competitor — it's OpenAI themselves shipping a higher-level 'Operator' abstraction that makes this raw loop feel like assembly code, at which point developers stop using the primitive directly. What earns the ship anyway: it actually works on the class of tasks it's designed for (form-filling, data extraction from non-API sites), and the integration path for teams already on the OpenAI stack is genuinely low-friction.

Futurist
80/100 · ship

The long-term story here is about AI agents needing reliable access to every app humans use. We can't wait for every SaaS to ship an official API. Tools like Kampala are how AI agents will integrate with the existing software ecosystem for the next five years, until MCP-style universal interfaces catch up.

81/100 · ship

The thesis here is falsifiable: by 2028, the majority of software integration work will happen via UI-layer automation rather than API negotiation, because the long tail of enterprise software will never expose clean APIs. The dependency that has to hold is that vision-action loop latency drops fast enough to make real-time task automation economically viable — right now at several seconds per action step, synchronous workflows are painful. The second-order effect that matters most isn't developer productivity; it's that this decouples automation from cooperation from the software vendor — no partnership, no webhook docs, no SDK required. OpenAI is riding the trend of 'software that wasn't built for machines getting used by machines,' and they're on-time, not early — Anthropic already planted the flag. If this tool wins, the infrastructure state is: sandboxed browser runtimes become a commodity layer the way Lambda functions did, and the fight moves entirely to which model makes the fewest misclicks.

Creator
80/100 · ship

For social media automation and cross-platform content workflows this is a game-changer. Building automations for platforms with limited or expensive APIs has always required fragile browser scraping — having a stable API layer extracted from the real app traffic is a much better foundation.

No panel take
Founder
No panel take
55/100 · skip

The buyer is any developer team automating workflows against software that lacks APIs — which sounds like a wide market, but the pricing is the problem: at GPT-4o token rates plus screenshot tokens per action step, a 20-step task can cost more than a human doing it once, and at scale that unit economics breaks before the product does. The moat is zero: this is a capability that Anthropic, Google (Gemini + Project Mariner), and any open-weight model with vision can replicate, and OpenAI's only durable advantage is model quality, which is a temporary lead not a structural one. What would have to change for this to earn a ship: a pricing tier that caps cost per completed task rather than per token, so that developers can build products with predictable margins on top of it — right now you're taking on model cost volatility every time a task gets more complex.

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