Coasty
A computer-use AI agent that runs on its own isolated virtual machine
Overview
Coasty automates work by literally operating a computer, clicking, typing, reading the screen, the same way a person would, instead of relying on APIs that break the moment a vendor changes their product. Each agent gets its own dedicated VM instead of running in a shared environment, which matters if you're worried about one misbehaving agent affecting everything else. It backs this up with a claimed 85.6% score on OSWorld, a recognized benchmark for this kind of agent, putting it near the top of the field on paper.
It's aimed at operationally heavy teams, insurance, accounting, freight, healthcare billing, that deal with legacy software with no clean API to automate against. Some early reviewers were impressed by the isolated-VM safety model; others were blunter, arguing that Coasty is largely a UI layer over commodity LLM APIs like Claude or GPT-4 with little that couldn't be replicated, and that the freemium pricing masks a weak reason to pay. Worth testing on a low-stakes workflow first given both the genuine promise and the real skepticism around it.
Key Features
Screen-Based Automation: Works with any software by reading and acting on the screen, no API or connector required.
Self-Healing Workflows: Adapts automatically when a UI changes, instead of breaking like traditional RPA tools.
Isolated VMs Per Agent: Every agent runs on its own dedicated virtual machine rather than a shared pool, limiting blast radius if something goes wrong.
Human-in-the-Loop Approvals: Pauses for a human sign-off on sensitive steps instead of acting blind.
Full Audit Trails: Captures screenshots of every action for replay and verification.
Unstructured Data Handling: Works with PDFs, emails, and other messy inputs, not just clean structured data.
Pricing
Starting price
$19/mo
Free: A no-credit-card signup is offered, reportedly around 10 minutes of agent time per month on a single VM, though this isn't listed on the main pricing page.
Starter: $19/month. 200 credits, 1 always-on VM, 3 agents in parallel.
Plus: $50/month. 600 credits, 2 always-on VMs, 6 agents in parallel.
Unlimited: $99/month. Unlimited credits, 2 always-on VMs, 5 concurrent agents.
Disclaimer: free tier limits weren't confirmed on Coasty's own pricing page. Confirm current pricing and free tier details on Coasty's own site before buying.
Pros
Works Without APIs: Screen-based control means it can automate legacy or connector-less software that other RPA tools can't touch.
Real Isolation: Dedicated VMs per agent is a meaningfully safer architecture than shared-pool agent infrastructure.
Strong Benchmark Result: An 85.6% OSWorld score is a genuinely competitive number if it holds up under independent testing.
Human Oversight Built In: Pausing for approval on sensitive steps and keeping full audit trails is the right instinct for an agent that touches real systems.
Cons
Moat Questioned By Reviewers: Some early reviewers argue it's largely a wrapper around existing LLM APIs with little that's technically defensible or hard to replicate.
Very New: Limited independent, long-term track record beyond its Product Hunt launch and self-reported benchmark.
Concurrent Agent Limits Are Small: Even the top $99/month tier caps you at 5 concurrent agents, which may not scale for larger operations.
No Confirmed Affiliate Program: Nothing indicating an established affiliate or partner program yet.
What Makes It Unique
Dedicated VM Per Agent: Unlike most agent infrastructure that runs workloads in a shared pool, Coasty isolates every agent on its own virtual machine, limiting the damage if one agent misbehaves.
Kay Score
6
/ 10
Tool Information
Pricing
$19/mo
Category
Automation & AI Agents
Platform
Web / iOS / Android
Last Updated
