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Restate

Durable execution engine for workflows and AI agents

freemiumopen sourceupdated Aug 16, 2026

Restate is a durable execution engine that provides reliable workflow orchestration for AI agents and backend services. It runs as a single binary with no external dependencies, delivering sub-50ms latency and 94K+ actions per second. Supports TypeScript, Python, Go, Java, and Kotlin SDKs with built-in retries, sagas, and virtual object state. MIT licensed with 3,700+ GitHub stars.

Restate solves the reliability problem that plagues AI agent systems and distributed backend services: when a long-running workflow fails midway through execution, traditional approaches either lose progress entirely or require developers to implement complex checkpoint-and-resume logic manually. Restate's durable execution model transparently persists the state of every function call, so when failures occur — whether from network timeouts, provider outages, or process crashes — execution resumes exactly where it left off without re-running completed steps or duplicating side effects. This guarantee is especially critical for AI agents that make expensive LLM calls and interact with external APIs.

Unlike Temporal, which requires running multiple services including a database and matching engine, Restate operates as a single self-contained binary with zero external dependencies. This architectural simplicity translates to sub-50ms latency for workflow activation and throughput exceeding 94,000 actions per second, making it suitable for latency-sensitive applications where traditional workflow engines add unacceptable overhead. SDKs for TypeScript, Python, Go, Java, and Kotlin provide native integration with each ecosystem, using familiar patterns like async/await and decorators rather than forcing developers into DSL-specific programming models.

Restate's virtual object abstraction provides keyed state that is automatically consistent and concurrency-safe, eliminating an entire class of distributed systems bugs around concurrent access to shared state. For AI agent workflows, this means agent state, conversation history, and tool execution results are durably stored and correctly serialized without external databases or explicit locking. The Restate Cloud managed service reached general availability, offering the same guarantees without operational overhead. With 3,700+ GitHub stars and MIT licensing, Restate positions itself as the lightweight, high-performance alternative to Temporal and Hatchet for teams building reliable AI agent infrastructure.

Pricing

Free self-hosted (MIT); Restate Cloud managed service paid

Platforms

Single binary — Docker, any platform; SDKs for TS, Python, Go, Java

Categories

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Use Cases

Temporal logo

Temporal

Durable execution for fault-tolerant workflows

Temporal is an open-source durable execution platform that ensures application code runs to completion regardless of failures or outages. It captures workflow state at every step, enabling seamless recovery without custom retry logic. With SDKs for Go, Java, Python, TypeScript, and .NET, Temporal powers mission-critical orchestration at Netflix, Nvidia, and other enterprises. Valued at $5B, it replaces fragile cron jobs, state machines, and saga patterns with resilient workflow-as-code.

freemiumOpen Source
Hatchet logo

Hatchet

Modern task queue and workflow orchestration built on PostgreSQL

Hatchet is an open-source task queue and workflow orchestration platform designed as a modern alternative to Celery and BullMQ. Built on PostgreSQL for durability, it handles background jobs, AI agent workflows, RAG pipelines, and GPU task scheduling with TypeScript and Python SDKs. YC W24 batch with 7,400+ GitHub stars, MIT licensed. Supports fan-out, rate limiting, retries, and real-time observability through a web dashboard.

freemium
Trigger.dev logo

Trigger.dev

Open-source background jobs and AI workflows for TypeScript

Trigger.dev is an open-source platform for building and deploying background jobs, AI agents, and long-running workflows in TypeScript. It eliminates serverless timeouts with durable task execution, automatic retries, queue-based concurrency control, and elastic scaling. Used by 30,000+ developers at companies like MagicSchool and Icon.com, it processes hundreds of millions of agent runs monthly. Backed by a $16M Series A led by Dalton Caldwell's Standard Capital fund.

freemiumOpen Source
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Build and deploy AI agents on Cloudflare's edge network

Cloudflare Agents is an open-source SDK for building and deploying AI agents that run on Cloudflare's global edge network. It provides durable state, scheduled tasks, WebSocket communication, and browser rendering capabilities within Workers. Agents persist across requests using Durable Objects and can orchestrate multi-step workflows with built-in MCP server support. Over 7,000 GitHub stars.

freemiumOpen Source

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FAQ

What is Restate?

Restate is a durable execution engine that provides reliable workflow orchestration for AI agents and backend services. It runs as a single binary with no external dependencies, delivering sub-50ms latency and 94K+ actions per second. Supports TypeScript, Python, Go, Java, and Kotlin SDKs with built-in retries, sagas, and virtual object state. MIT licensed with 3,700+ GitHub stars.

Is Restate free?

Restate offers a free tier alongside paid plans. Free self-hosted (MIT); Restate Cloud managed service paid

Is Restate open source?

Yes — Restate is open source.

What are the best Restate alternatives?

The top editor-verified Restate alternatives are Temporal, Hatchet, Trigger.dev, and more.