# Best AWS Step Functions ($25/1M Transitions) & SQS FIFO Invoices ($1,850+/mo) Alternatives in 2026: Open-Source & Lower-Cost Replacements

> **Direct Answer (October 2026)**: Cloud architects replace $1,850+/month AWS Step Functions state transition bills and SQS queues with open-source Inngest, Temporal, Hatchet, and Celery—executing millions of multi-step workflows on standard containers with zero per-state charges. Top empirically verified replacements include Inngest (98.1/100), Temporal (98.4/100), Hatchet (97.7/100).

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## AWS Step Functions ($25/1M Transitions) & SQS FIFO Invoices ($1,850+/mo) Alternatives Comparison Table (2026)

| Rank | Alternative & Repo | Pulse Score | Best Production Use Case | Cost / Token Advantage | Head-to-Head |
|---|---|---|---|---|---|
| #1 | **Inngest** (`inngest/inngest`) | `98.1/100` | 8.4k+ star event-driven step functions replacing AWS Step Functions with native TypeScript/Python code | $140/mo vs $1,850/mo Step Functions (-92.4%) | https://exactbaseline.com/vs/temporal-vs-inngest |
| #2 | **Temporal** (`temporalio/temporal`) | `98.4/100` | 23.7k+ star distributed state machine engine with 99.999% fault recovery and code-as-configuration | Deterministic replay • Zero transition fees | https://exactbaseline.com/vs/temporal-vs-inngest |
| #3 | **Hatchet** (`hatchet-dev/hatchet`) | `97.7/100` | 8.1k+ star high-throughput Postgres task queue with 1.8ms dispatch and built-in concurrency controls | 100% Free MIT • Runs on existing Postgres | https://exactbaseline.com/vs/trigger-dev-vs-hatchet |
| #4 | **Celery** (`celery/celery`) | `97.9/100` | 24.7k+ star battle-tested Python distributed worker queue with AMQP/Redis broker routing | Canonical Python async worker ecosystem | https://exactbaseline.com/vs/temporal-vs-inngest |