Devin Slow Today? Here's Why and How to Fix It

If Devin feels sluggish right now, the most likely causes are server-side load on Cognition's infrastructure, ACU throttling when your plan's compute budget is running low, or a particularly complex task that requires more reasoning steps. Most slowdowns resolve within minutes. If it's been more than 30 minutes, check status.cognition.ai for an active incident.

• Devin is billed in Agent Compute Units (ACUs) - heavier tasks consume more ACUs and take longer
• The Starter plan includes 250 ACUs/month; Team plans start at higher allocations
• Most "slow" reports during business hours are infrastructure load, not user-side issues

Why is Devin slow today?

Devin slowness falls into four categories: platform outages, high server load during peak hours, ACU budget running low on your plan, and task complexity. Cognition's infrastructure serves many concurrent sessions, and when demand spikes (typically 9am-6pm US Eastern), response times increase across the board. You can rule out your account as the cause by checking the status page first.

Server load and peak hours

Like most cloud-based AI agents, Devin runs on shared compute. During peak hours, queue times for new sessions increase and active sessions may run slower. This is the most common cause of slowness when everything else looks fine. It's not something you can fix on your end — you either wait or schedule heavy tasks for off-peak times (evenings, weekends).

ACU budget and throttling

Devin tracks usage in ACUs. According to Cognition's documentation, each ACU represents a unit of agent compute time — more complex tasks (multi-file refactors, long debugging sessions) consume ACUs faster than simple tasks. As you approach your monthly ACU cap, Devin may throttle execution speed or queue tasks differently. Check your ACU balance in the Devin dashboard under Settings > Usage.

Task complexity

Devin runs a full reasoning loop: it plans, writes code, runs tests, reads output, and iterates. A task that touches 20 files across a monorepo is genuinely slower than one that edits a single function. If Devin looks "stuck," it may still be working — check the action log in the session panel to see what it's currently doing.

Active platform incident

Cognition occasionally has infrastructure incidents that affect response latency or session availability. Always verify at status.cognition.ai before spending time debugging locally. Past incidents have included degraded agent execution speeds and delayed session startup times.

How do you check if Devin is having issues?

Go to status.cognition.ai for the official Cognition status page. It lists current incidents, degraded components, and historical uptime. If the status page shows "Operational" but you're still seeing slowness, the issue is likely high load rather than a formal incident — Cognition typically only posts incidents for significant degradation, not general slowdowns.

You can also check community reports on the Cognition Discord and X/Twitter. Searching "Devin slow" on X often surfaces real-time reports from other users that precede official status page updates by 10-20 minutes.

What should you do when Devin is slow?

Run through this checklist in order:

1. Check status.cognition.ai for active incidents
2. Check your ACU balance in Settings > Usage — if you're near your monthly cap, that's the cause
3. Restart the session — occasionally a session gets stuck in a bad state; closing and reopening often resets it
4. Simplify the task — break large tasks into smaller subtasks and queue them sequentially
5. Try off-peak hours — if you can wait, run heavy sessions in evenings or early mornings
6. Contact Cognition support if the issue persists beyond an hour with no status page update

Should you restart the session or wait?

If Devin's action log shows activity (tool calls, file reads, test runs), let it continue — it's working, just slowly. If the action log has been static for more than 10 minutes with no new entries, the session is likely stalled. In that case, restart it. Devin doesn't automatically resume from stalled sessions.

How do Devin's ACU limits affect speed?

Devin pricing is structured around ACUs. The Starter plan includes 250 ACUs per month, Team plans offer higher allocations, and Enterprise plans are custom. When you run out of ACUs mid-month, new sessions are blocked until the next billing cycle resets your balance. Running low (under ~20% remaining) may also reduce priority on shared compute queues, contributing to perceived slowness.

Plan	ACUs/month	Approx. sessions
Starter	250	~8-15 medium tasks
Team	Custom	Higher allocation
Enterprise	Custom	Negotiated

ACU consumption per task varies widely. A simple "add a unit test" task might use 2-5 ACUs; a multi-file refactor with testing can use 30-50+. Cognition shows ACU cost per session in your usage history, so review past sessions to understand your typical burn rate. See Devin pricing and rate limits for a full breakdown.

Is Devin slow or completely not working?

There's a meaningful difference between slow and broken. Slow means sessions start but take longer than usual to produce output. Broken means sessions fail to start, throw errors, or produce no action log entries at all. The fix differs: slowness is usually infrastructure load or low ACU budget; broken sessions usually indicate an incident or account issue.

If you're getting explicit error messages (connection timeouts, 5xx errors, "session failed to initialize"), that points to a platform incident rather than slowness. In that case, the status page and support are your next steps — no amount of session restarting will help during an active outage.

What can you use while Devin is slow?

If Devin is experiencing extended slowness and you have time-sensitive work, a few alternatives cover different use cases:

• Claude Code — best for interactive, in-terminal coding sessions with deep repo context. Faster feedback loop than Devin for most tasks. See Claude Code vs Devin for a full comparison.
• Cursor — IDE-integrated assistant, good for in-editor completions and targeted edits. Lower latency than agent-mode tools. See Cursor or Devin for coding.
• Copilot — inline completions in VS Code/JetBrains with minimal setup. Less autonomous but always responsive. See Devin or Copilot.

The tradeoff: these tools require more manual direction than Devin's autonomous mode. Devin's strength is running end-to-end tasks unattended; when it's slow, the alternatives require you to stay in the loop more actively.

Key takeaways

1. Check status.cognition.ai first to rule out a platform incident
2. Review your ACU balance — low balance is a common, overlooked cause of slowness
3. If the action log shows activity, let Devin continue — complex tasks are genuinely slow
4. If the action log is static for 10+ minutes, restart the session
5. For time-sensitive work, fall back to Claude Code or Cursor in the meantime
6. Report persistent issues via Cognition support or the Cognition Discord

Sources

• https://status.cognition.ai — Cognition status page
• https://docs.cognition.ai/reference/acu — ACU documentation
• https://www.cognition.ai/pricing — Devin pricing and plans