Deepgram API free-tier rate limit: the limit, when it resets, and the error you'll see

Deepgram's own docs, read 2026-10-25: the limit on its free allowance, when it resets, and the error text an agent sees on hitting it. Each quote is verbatim and links its source.

The limit

Pay as You Go plan, Speech to Text, Nova-3 model, North America row (the other three regions show the same); limits apply per project

Nova-3 Pre-Recorded Up to 50 concurrent requests Streaming Up to 150 concurrent requests

Source: developers.deepgram.com, read 2026-10-25.

Pay as You Go (self-serve) accounts only, limits per project: not a rule for every plan

Secondary projects created on a self-serve account are limited to a single concurrent stream by design.

Source: developers.deepgram.com, read 2026-10-25.

When it resets

Not documented by Deepgram (as of our read).

The error your agent will see

HTTP status: 429.

429 Rate limit exceeded

TOO_MANY_REQUESTS

Source: developers.deepgram.com, read 2026-10-25.

Our row

Our dated entry for Deepgram.

Other free speech-vision APIs if you're rate-limited

• AssemblyAI signup credits (AssemblyAI), checked 2026-09-16
• ElevenLabs free plan (ElevenLabs), checked 2026-09-16

Facts as read on 2026-10-25. Limits change: check the linked source before relying on a number.