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AssemblyAI: Increase in 429 errors with LLM Gateway requests using Haiku 4.5

Affected components: APIs - LLM GatewayLLM Gateway

Timeline of updates

1. identified2026-02-09 19:53 UTC

   We have identified an issue with the AWS hosting of our Claude Haiku 4.5 model, which is leading to increased 429 errors when using LLM Gateway with the Haiku 4.5 model. This issue is not currently affecting other LLM Gateway models, and retries for requests using Haiku 4.5 are often successful. We are working with our provider to resolve the issue as quickly as possible.

2. monitoring2026-02-09 22:55 UTC

   The increased error rates with Haiku 4.5 that we were seeing earlier have subsided but we are continuing to monitor traffic on our end to ensure continued good performance.

3. resolved2026-02-10 00:33 UTC

   This issue has been resolved and LLM Gateway requests using Haiku 4.5 are continuing to complete normally.

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). AssemblyAI profile · Recent AssemblyAI incidents · Markdown · JSON