Inngest vs Trigger.dev
Serverless background orchestration: Inngest step pricing ($0.50/100k steps) vs Trigger.dev v3 compute time ($0.000045/vCPU-second). Compare long-running AI workflows and timeouts.
Inngest Option A
- Pricing Metric: Step executions ($0.50 per 100,000 steps)
- Free Tier: 20,000 steps / month included free
- Execution Model: Webhook callback orchestration to your serverless endpoint
- Timeout Constraints: Bounded by your host's HTTP timeout (Vercel 15s - 60s)
- Self-Hosted Option: Open-source Dev Server (Cloud managed for production)
- Key Strength: Declarative step caching, automatic retries & flow control
Trigger.dev (v3) Option B
- Pricing Metric: Compute time: $0.000045/vCPU-sec + $0.0000045/GB-RAM-sec
- Free Tier: Free $10 monthly compute credits included
- Execution Model: True long-running containers running directly on Trigger cloud
- Timeout Constraints: Zero timeouts! Tasks can run for hours or days
- Self-Hosted Option: 100% open-source Docker deployment (AGPLv3)
- Key Strength: Real-time streaming, long-running AI agent tasks, and zero timeout limits
Head-to-Head Financial Crossover Simulator
Adjust your volume parameters to calculate exact monthly expenses between Inngest and Trigger.dev (v3).
In-Depth Architecture & Specification Comparison
Comprehensive side-by-side technical evaluation across pricing models, operational complexity, and performance.
| Evaluation Dimension | Inngest | Trigger.dev (v3) | Architectural Verdict & Trade-off |
|---|---|---|---|
| Pricing Architecture | $0.50 per 100,000 steps ($0.005/1k) | $0.000045 / vCPU-second ($0.162/vCPU-hr) | Inngest charges per step; Trigger charges per second of compute |
| Cost at 250k Jobs (5 Steps, 15s avg) | $6.25 / month (1.25M steps) | $16.88 / month (1 vCPU, 512MB RAM) | Inngest is cheaper for quick, multi-step serverless tasks |
| Long-Running Video/AI Jobs (10 mins) | Difficult (Requires breaking into 60s steps) | Seamless (Runs up to 24 hours continuously) | Trigger.dev v3 completely solves Vercel function timeout errors |
| Self-Hosted Open Source Option | Dev Server only (Managed Cloud needed) | 100% self-hostable with Docker & Postgres | Trigger.dev can be deployed completely on your own VPS for $0 |
| Real-Time Output Streaming | Event-driven state inspection | Native real-time token and progress streaming | Trigger.dev v3 provides superior DX for generative AI progress |
| Concurrency & Rate Limiting | Native debounce, rate limits, and batching | Queue-level concurrency and priority limits | Both provide excellent throttling to protect downstream APIs |
Production Implementation Artifact
Defining a Zero-Timeout Long-Running Task in Trigger.dev v3. Production-tested snippet ready to deploy.
// trigger/generate-report.ts - Zero timeout AI document processing task
import { task } from "@trigger.dev/sdk/v3";
import { generateFinancialReport } from "../lib/ai";
export const generateEnterpriseReport = task({
id: "generate-enterprise-report",
maxDuration: 1800, // Runs up to 30 minutes with ZERO HTTP timeouts!
run: async (payload: { reportId: string; documentUrls: string[] }) => {
console.log(`Starting deep synthesis for report: ${payload.reportId}`);
// Executes complex scraping, embedding, and multi-turn LLM reasoning
const result = await generateFinancialReport(payload.documentUrls);
return { status: "COMPLETED", reportUrl: result.pdfUrl };
},
});
Production Gotchas & Failure Modes
Critical architectural edge cases and bill shock pitfalls documented by engineering teams in production.
The Vercel Serverless Function Timeout Wall
Inngest works by making HTTP POST requests back to your Next.js app. If a single step in your job takes longer than Vercel's function timeout (15s on Hobby, 60s on Pro), the step crashes. Trigger.dev v3 avoids this by executing tasks in its own isolated compute environment.
Step Fan-out Ingestion Bill Shocks on Inngest
Running `step.run()` inside a loop that iterates over 5,000 customer records creates 5,000 billable Inngest steps. Instead, process data in batches of 100 to reduce billable step counts by 99%.
Unbounded Idle Polling Seconds in Trigger.dev
If a Trigger.dev task uses `await sleep(60000)` using standard JavaScript setTimeout, compute seconds continue to accrue. Always use Trigger.dev's durable `wait.for()` primitive to pause compute execution and avoid idle billing.
Frequently Asked Questions
Common questions answered with real-world developer economics and engineering benchmarks.
Inngest orchestrates tasks by triggering HTTP webhooks back to your own serverless infrastructure (Vercel, AWS Lambda), meaning task steps must complete within your host's timeout limit. Trigger.dev v3 executes your code inside its own dedicated long-running containers with zero timeouts.
Yes. Trigger.dev is open-source and can be hosted on a standard Hetzner or DigitalOcean VPS using Docker Compose, providing a world-class background job engine at $0 software cost.
Trigger.dev v3 is generally superior for complex AI agents because autonomous tasks often take 2 to 10 minutes to finish multi-step web scraping and tool calls, which easily exceed standard serverless HTTP timeout limits.
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