Flux rate limits, context window & usage caps (2026)
Rate limits, context window, message limits, file upload caps and image generation limits - all Flux plans compared.
Flux usage limits by plan
| Max Resolution | 1024x1024 pixels | Schnell model default |
| Models Available | Flux 1 Schnell, Flux 1 Dev models | |
| Api Access | Yes boolean | |
| Rate Limit | 1 requests/second | Free tier API rate limit |
| Max Resolution | 2048x2048 pixels | Pro models max resolution |
| Models Available | Flux 1.1 Pro, Flux 1 Pro, Flux 1 Dev, Flux 1 Schnell models |
What happens when you hit Flux's limits?
Check the reset window - most limits refresh within 1–60 minutes
Reload or try again after the reset window passes
If you hit limits regularly, upgrade your plan to increase caps
Flux limit reset schedule
⚡
Per minute
API RPM limits - reset every 60 seconds
🕐
Per hour
Short rolling windows for message quotas
⏱
Per 5 hours
Common for consumer plan message limits
📅
Per day / month
Image gen credits and file storage caps
Exact reset period per limit type is shown in the "Notes" column of the plan table above. Flux uses rolling-window resets - quotas refresh continuously, not at a fixed midnight cutoff.
More Flux intelligence
Live status →
Check if rate limit errors are due to an active outage
Pricing →
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Free tier →
Compare free limits across all AI tools
Limits sourced from Black Forest Labs's official documentation. Updated when plan changes are announced.
Flux limits - frequently asked questions
What is the Flux message limit?
Flux message limits vary by plan - see the full breakdown by tier in the table above.
Does Flux have a file upload limit?
Yes, Flux enforces file upload limits that vary by plan. See the detailed breakdown above.
When do Flux limits reset?
Reset periods vary by limit type - many Flux limits reset on a rolling window (e.g., per 5 hours or per 24 hours). Check the notes column in the table above for specific reset schedules.
What happens when you hit Flux's rate limit?
Flux will temporarily block new requests when you exceed your plan's limits. You may see an in-app message or receive an HTTP 429 response. Wait for the reset window to pass or upgrade your plan.