Cloudflare Computer vs Portfolio Lab: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Cloudflare Computer and Portfolio Lab — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
C
Cloudflare Computer
Cloudflare
Cloudflare's virtual filesystem for AI agents — a Durable Object-backed workspace with three pluggable execution runtimes.
Key features
- Durable Object Workspace: The authoritative filesystem state lives in a Durable Object's SQLite store, so agent state is transactional, colocated, and survives worker restarts.
- Pluggable Runtime Backends: One workspace.runtime.exec entry point lets a Workspace register multiple execution backends under stable IDs and pick per call.
- Container Backend: Projects the SQLite state into a sandbox container as a real FUSE mount via computerd — full Linux userland, real binaries, real network.
- Isolate Shell Backend: Runs just-bash inside a Dynamic Worker that reaches the authoritative Workspace over Workers RPC — no container, no second store, no sync round trip.
- Isolate JavaScript Backend: Evaluates ES modules in a fresh Dynamic Worker with structured input/results, durable relative imports, Workspace-backed node:fs/promises, and trusted ws:git and ws:artifacts modules.
- Egress Policy Controls: The examples/egress worker demonstrates matching none, all, or custom egress policies across all three backends for the same request.
- Filesystem-only Mode: A Workspace can be constructed without any backend at all, giving agents just the filesystem surface for tools that don't need execution.
- Worked Examples: The examples/ directory ships runnable Workers — container, worker-shell, worker-javascript, egress, think, and a compare-runtimes UI — each with its own README.
Best for
- Building Coding Agents on Workers: Give a Workers-native agent its own filesystem and shell so it can write code, run tests, and produce artifacts without leaving Cloudflare's edge.
- Comparing Runtimes Side-by-side: The examples/think compare-runtimes UI runs the same task against the container and worker runtimes to profile latency, isolation, and cost.
- Sandboxed User Scripts: Run untrusted user-supplied JavaScript against a per-user Workspace filesystem in an Isolate JavaScript backend with configurable egress.
- Agent Working Directories: A think-style chat agent uses the Workspace as its scratch directory, so files it writes are durable across sessions and reachable by other backends.
- Prototyping Multi-tenant Runtimes: Preview surface for teams designing agent-runtime products on top of Durable Objects, without committing to a single backend design.
- Document Generation Pipelines: The tutorial builds one endpoint whose agent writes a markdown recipe card on the host and runs pandoc in the container to produce a PDF.
P
Portfolio Lab
alphaAI Capital Management
AI-powered platform to build, validate, and auto-execute systematic investment strategies through your own brokerage.
Key features
- AI Strategy Builder: Describe an investing goal and Portfolio Lab generates several complete, tunable strategies with holdings, entry/exit rules, and rebalance logic.
- Multi-Objective Optimization: Every build outputs strategies optimized for Return, Sharpe ratio, and Minimum Drawdown so you can compare tradeoffs side by side.
- Live Paper Validation: Strategies are stress-tested with in-sample and out-of-sample data, then run on live paper trading with real market prices and simulated fills.
- Agentic Trading via MCP: Claude, ChatGPT, or any MCP-compatible agent connects to your own brokerage account, mirrors your portfolio, and places timestamped trades.
- Diverse Strategy Rulebooks: Risk-Aware Hedged, Tactical Long-Only, Tactical Long/Short, Momentum, Mean Reversion, and Leveraged Regime Switcher — each with a clear discipline.
- Specialized AI Models: Seven purpose-built models with 200+ predictors work over fundamental, technical, estimate, macroeconomic, and alternative data — not LLM guesswork.
- Full Explainability: Every trade, allocation shift, and move to cash is visible, timestamped, and auditable so you can see exactly why the strategy acted.
Best for
- Systematic Long-Term Portfolios: Build a core hedged strategy that shifts to cash or adds a downside hedge automatically when AI detects elevated market risk.
- Trend Following: Deploy momentum strategies that rank assets by signal strength and rotate into the strongest performers while cutting losers.
- Dip Buying: Run mean-reversion strategies that systematically buy oversold assets and exit when prices snap back, with a cash buffer during high-risk regimes.
- Agent-Driven Execution: Let your AI agent auto-execute today's trade plan in your own Robinhood or brokerage account without giving up custody.
- Strategy Research: Explore how the same idea performs under different objectives (Return vs. Sharpe vs. Drawdown) before deploying real capital.
- Hedged Trend Following: Combine momentum with an AI-activated margin hedge to capture trends while protecting against sharp reversals.