Best Durable Execution Platforms for AI Agents 2026
The short answer
Temporal for mission-critical or polyglot agents, Inngest for the least infrastructure, Trigger.dev for TypeScript teams running long tasks, Cloudflare Workflows if you already live on Workers. All four make agent steps durable — a crash or deploy resumes the run instead of repeating paid LLM calls. They differ in what they bill (actions, executions, compute seconds, steps) and in how much you operate. Prices are list USD as of October 15, 2026.
The comparison
| Platform | Billing unit | Entry price | Free allowance | Languages | Best for |
|---|---|---|---|---|---|
| Temporal Cloud | Actions + storage | $50 per million actions, down to $25 with volume | $150 credits for 90 days | Go, Java, Python, TypeScript, .NET, PHP, Ruby, Rust | Mission-critical, polyglot, high volume |
| Inngest | Executions (runs and steps) | $99/month for 1M executions; $499 for 10M | 50,000 executions/month | TypeScript, Python and more (open-source SDK) | Fastest path, no workers to run |
| Trigger.dev | Compute per second + per-run fee | $10 Hobby, $50 Pro (credits included) | $5 credits/month | TypeScript | Long-running TS tasks, realtime UI |
| Cloudflare Workflows | Requests, CPU ms, steps, storage | Workers Paid: 500K steps included, then $0.80 per 100K | 3,000 steps/day on Workers Free | TypeScript/JavaScript (Workers) | Agents on Cloudflare |
Platform notes
Temporal. The reference implementation of durable execution. Every workflow, activity, timer, signal and query is a billable action; storage is billed per GB-hour, active and retained. There are no feature tiers: retries with backoff, four timeout classes, saga compensation, signals and updates mid-flight, durable timers that sleep for months, and worker versioning are all included. For agents, Temporal runs OpenAI Agents SDK and Google ADK LLM and tool calls as durable activities. The cost is operational: you run workers and keep workflow code deterministic.
Inngest. You wrap existing functions in step.run() and Inngest handles retries, state, concurrency and scheduling with serverless endpoints, so there is no queue or worker fleet to manage. Plans cap concurrent steps (5 free, 100 on $99, 500 on $499) and total run length (30, 90 and 366 days). It is the shortest route from a fragile agent loop to a resumable one.
Trigger.dev. Built for long-running background tasks in TypeScript. You pay a monthly plan that includes credits — Free $5, Hobby $10, Pro $50 — then per-second machine time (the smallest machine is $0.0000169 per second) plus $0.25 per 10,000 runs. Realtime connections stream task progress to your UI, useful for agents a user is watching.
Cloudflare Workflows. Included in Workers Free and Paid. Paid accounts get 10 million requests, 30 million CPU milliseconds, 1 GB-month of storage and 500,000 steps a month, then $0.30 per million requests, $0.02 per million CPU ms, $0.20 per GB-month and $0.80 per 100,000 steps; step and storage billing started on August 10, 2026. Waiting on an LLM response or step.sleep burns no CPU time, which suits agents that spend most of their life waiting.
How to choose
- More than one backend language, or strict SLAs: Temporal.
- A Python or TypeScript agent that must stop losing state with the least setup: Inngest.
- TypeScript tasks running for hours with a live progress UI: Trigger.dev.
- Already deployed on Cloudflare Workers: Cloudflare Workflows.
Durable execution is the reliability layer under an agent, not the agent framework itself; pair it with the frameworks in best AI agent platforms for autonomous workflows. Retried steps still re-bill model tokens, so cache aggressively — see current API prices.
Last verified: October 15, 2026. Prices are list USD from vendor pricing pages.