# AI API outages on September 19, 2026 (UTC)

Measured every 5 minutes from 4 regions. An outage is attributed to a provider only when it failed from 2+ regions at once and no other provider failed in the same minutes.

## Was the writer API down on September 19, 2026?

Yes, measured. 1 outage(s) attributed to writer: host probes failed from up to 2 of 4 regions at once while no other provider was failing, first at 21:48 UTC, at least 7 minutes observed in total.

| UTC | What failed | Regions | Duration (lower bound) | Failed probes | Verdict |
| --- | --- | --- | --- | --- | --- |
| 21:48-21:55 | host probes | ap-tokyo eu-hetzner | >=7 min | 2 | provider_outage |

Live status now: https://llmlatency.dev/provider/writer

## Was the doubao API down on September 19, 2026?

Not attributably. 1 multi-region failure(s) of doubao coincided with failures of other providers, so the cause sat above doubao and is not blamed on it.

| UTC | What failed | Regions | Duration (lower bound) | Failed probes | Verdict |
| --- | --- | --- | --- | --- | --- |
| 13:48-14:00 | host probes | eu-hetzner sa-east | >=12 min | 2 | unattributed |

Live status now: https://llmlatency.dev/provider/doubao

## Was the iflytek API down on September 19, 2026?

Not attributably. 1 multi-region failure(s) of iflytek coincided with failures of other providers, so the cause sat above iflytek and is not blamed on it.

| UTC | What failed | Regions | Duration (lower bound) | Failed probes | Verdict |
| --- | --- | --- | --- | --- | --- |
| 14:00-14:00 | host probes | ap-tokyo sa-east | <5 min | 2 | unattributed |

Live status now: https://llmlatency.dev/provider/iflytek

## Was the stepfun API down on September 19, 2026?

Not attributably. 1 multi-region failure(s) of stepfun coincided with failures of other providers, so the cause sat above stepfun and is not blamed on it.

| UTC | What failed | Regions | Duration (lower bound) | Failed probes | Verdict |
| --- | --- | --- | --- | --- | --- |
| 12:40-13:10 | host probes | sa-east us-central | >=30 min | 3 | unattributed |

Live status now: https://llmlatency.dev/provider/stepfun

## Was the yi-01ai API down on September 19, 2026?

Not attributably. 1 multi-region failure(s) of yi-01ai coincided with failures of other providers, so the cause sat above yi-01ai and is not blamed on it.

| UTC | What failed | Regions | Duration (lower bound) | Failed probes | Verdict |
| --- | --- | --- | --- | --- | --- |
| 14:00-14:00 | host probes | sa-east us-central | <5 min | 2 | unattributed |

Live status now: https://llmlatency.dev/provider/yi-01ai

Source: https://llmlatency.dev/incidents/2026-09-19 · CC BY 4.0