Arch vs Temporal AI
Side-by-side comparison of features, pricing, and ratings
At a glance
| Dimension | Arch | Temporal AI |
|---|---|---|
| Pricing | Free (open-source, self-hosted) | Freemium (open-source core, cloud with usage-based billing) |
| Primary Focus | AI proxy for orchestrating, routing, and securing agents | Durable execution for reliable long-running workflows |
| Deployment | Self-hosted (sidecar or standalone) | Cloud (Temporal Cloud) or self-hosted |
| Key Feature | Zero-code capture of agentic signals and OTEL traces | Automatic state capture and recovery via Workflows |
| Best For | Multi-agent orchestration and safety filtering | Multi-step, failure-tolerant processes |
| License | Apache-2.0 open source | Open-source (MIT) + commercial cloud |
If you need bulletproof durability for long-running AI agents or microservices that survive crashes and retries, choose Temporal. If you primarily need a lightweight, open-source proxy to orchestrate multiple agents with built-in safety and observability, Arch is the better fit. Temporal is more powerful for mission-critical workflows; Arch is simpler for multi-agent routing.
Open-source AI-native proxy for agent orchestration, smart LLM routing, observability, and guardrails
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Open-source durable execution platform that keeps long-running workflows and AI agents alive through crashes, retries, and flaky APIs.
Visit WebsiteWho should pick which
- Solo founder prototyping multi-agent appPick: Arch
Arch is free, open-source, and easy to set up as a sidecar for routing and safety. No cloud costs or complex SDKs needed.
- Enterprise building financial transaction workflowsPick: Temporal AI
Temporal's durable execution with saga pattern and automatic retries ensures reliability. Cloud option provides SLAs and support.
- AI agent team requiring guardrails and observabilityPick: Arch
Arch provides zero-code agentic signals, OTEL traces, and jailbreak protection without modifying agent code.
- Platform team orchestrating microservices with long-running processesPick: Temporal AI
Temporal's Workflows and Activities handle multi-step orchestration with state persistence. Recent Serverless Workers reduce operational overhead.
- Startup needing both durable execution and agent routingPick: Temporal AI
Temporal can orchestrate the durable parts; you can still use Arch alongside for routing. Temporal's broader SDK support and visibility UI offer more comprehensive capability for core logic.
Frequently Asked Questions
Arch vs Temporal AI: which should you choose?
If you need bulletproof durability for long-running AI agents or microservices that survive crashes and retries, choose Temporal. If you primarily need a lightweight, open-source proxy to orchestrate multiple agents with built-in safety and observability, Arch is the better fit. Temporal is more powerful for mission-critical workflows; Arch is simpler for multi-agent routing.
Can Temporal and Arch be used together?
Yes, they are complementary. Temporal handles durable execution; Arch can sit in front as a proxy for agent routing and safety.
Which tool has better support for human-in-the-loop?
Temporal has explicit signals and pause/resume for human-in-the-loop workflows. Arch does not natively support this.
Is Arch truly free even for production?
Yes, it's Apache-2.0 open source. No paid tiers. You only pay for your own infrastructure.
Does Temporal offer a fully managed cloud service?
Yes, Temporal Cloud is available with usage-based billing and recently introduced Custom Roles (pre-release).
Which tool is easier to set up for a simple multi-agent system?
Arch is simpler – YAML config, sidecar deployment, and OpenAI-compatible API. Temporal has a steeper learning curve.
Can Temporal run on my own infrastructure?
Yes, Temporal server is open-source and can be self-hosted. The cloud version is optional.
Does Arch support model routing by name?
Yes, it supports smart LLM routing by name, alias, or preferences.
Which tool has more SDKs?
Temporal supports Python, Go, TypeScript, Ruby, C#, Java, PHP, and Rust (preview). Arch does not provide SDKs; it's a proxy with OpenAI-compatible API.
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Last reviewed: July 3, 2026