Inngest vs Restate

Inngest runs asynchronous code as durable functions for event-driven workflows, background jobs, and agents. Its execution steps handle retries, retain state, and recover from failures; traces show activity from trigger to completion. Flow controls manage concurrency and fairness when users compete for resources. Developers can use open-source SDKs for TypeScript, Python, and Go, or the REST API. Functions can run wherever an app is hosted, with deployment guides for services including Vercel, Netlify, Cloudflare Pages, Render, and DigitalOcean. Inngest also describes isolated sandboxes for testing changes and tools for scoring and comparing variants on production traffic. The Free plan includes 5 seats, 50k executions, 500k events ingested, and 24-hour trace history. Execution pauses when the free quota is reached until the account upgrades. Pro starts at $99/mo. Inngest states that it is SOC 2 Type II compliant, and that its US-based databases are encrypted at rest and application traffic uses TLS/SSL in transit.

Restate is a durable execution runtime for building resilient services, workflows, and AI agents. It records progress during execution and resumes after failures without discarding completed work. Its building blocks include durable functions, workflows, Virtual Objects, queues, durable RPC, timers, signals, and flow control. The interface exposes execution journals and controls to cancel, kill, restart, or pause executions. Restate runs as a self-hosted single binary, managed Restate Cloud, or BYOC in a customer cloud account. Listed SDKs include TypeScript, Python, Java, Go, Kotlin, Rust, and Ruby. Integrations include Vercel AI SDK, OpenAI Agents SDK, Google ADK, Google Gemini, Pydantic AI, and LangChain. The homepage reports under 10ms P99 latency overhead under load for durable actions. The Free plan is free for 50k durable actions monthly with no credit card. Restate Cloud starts at $75 a month.