Converse-STT
Deepgram

Deepgram Flux Multilingual

Deepgram Flux Multilingual is 3rd of 13 on time to first text and 14th of 15 on the Pipecat Dataset.

4.96%
Pipecat WER · 14th
4.53%
Ocular WER · 13th
793ms
First text · 3rd
114ms
Final text · 4th

Quality and speed frontier

Every model's error rate on the public clips, against how long its transcript takes to settle.

Most attractive quadrantPareto line
Final-text delay P50 (ms)
◣ better
Pipecat Dataset WER (%)
The line is the frontier: no model beats these on one measure without giving up the other.
Ranking

Deepgram Flux Multilingual against every other model

Open on the metric Deepgram Flux Multilingual places highest on, with the other three a tab away. Lower is better on all of them, so the order runs best first.

Time to first text, measured from the first audio packet. Lower is better.

#ModelFirst textturns
1AssemblyAI Universal 3.5 Pro489ms205
2Deepgram Flux English791ms199
3Deepgram Flux Multilingual793ms175
4Smallest Pulse1057ms206
5Inworld STT-11063ms206
6Deepgram Nova-31064ms203
7Speechmatics Linden1190ms194
8GPT Realtime Whisper1379ms206
9Cartesia Ink 21511ms198
10Gradium1705ms198
11Reson82400ms201
12Google Chirp 34480ms206
13Google Chirp 24497ms205

Not ranked: GPT-4o Mini Transcribe and GPT-4o Transcribe return no text until the speaker stops, so first-text time is not comparable.

Median across the same 206 Ocular Dataset turns. Providers finalize differently, so compare models with similar finalization contracts before treating small gaps as meaningful.

Latency

First text and final text, at three percentiles

Measured on the same 206 streamed Ocular Dataset turns as every other model. P90 and P95 say what a caller meets on a bad turn, which a median hides.

MeasureP50P90P95
Time to first text793ms2.00s3.41s
Final-text delay114ms135ms141ms
Against the field

Deepgram Flux Multilingual on the other two views

The same charts the benchmark page carries, with Deepgram Flux Multilingual ringed. Consistency across the two datasets is one reading; how fast a model starts against how fast it commits is the other.

Pipecat vs Ocular accuracy

Every model's error rate on the public clips, against the same model on real conversations.

Most attractive quadrant
Ocular Dataset WER (%)
◣ better
Pipecat Dataset WER (%)

Transcription response time

How soon each model returns its first words, against how soon its transcript is final.

Most attractive quadrant
Final-text delay P50 (ms)
◣ better
Time to first text P50 (ms)
Coverage

What the numbers rest on

999
Pipecat clips scored
8
Ocular recordings scored
175
turns timed
31
requests that failed

A clip counts only where the model returned usable text, so counts differ between models. Word error rate is measured the same way throughout: incorrect, missing, and extra words against the reference transcript.

Questions

Frequently asked questions

Where does Deepgram Flux Multilingual place in the benchmark?

Deepgram Flux Multilingual places highest on time to first text, 3rd of 13 at 793ms. Its weakest placing is the Pipecat Dataset, 14th of 15 at 4.96%.

How accurate is Deepgram Flux Multilingual?

Deepgram Flux Multilingual transcribes the 1,000 public Pipecat clips at 4.96% word error rate and the eight licensed Ocular recordings at 4.53%. Word error rate counts incorrect, missing, and extra words against the reference transcript, so lower is better.

How fast is Deepgram Flux Multilingual in a live conversation?

First text arrives after 793ms at the median, and the transcript is final 114ms after the speaker stops. Both are measured on the same 206 streamed turns as every other model, and the page shows P90 and P95 as well, which is what a caller meets on a bad turn.

How was Deepgram Flux Multilingual measured?

Every model runs the same two datasets under the same conditions: 1,000 public clips from Pipecat's STT benchmark dataset for accuracy at scale, and eight licensed conversation recordings from Ocular for real speech. Latency comes from 206 streamed turns, using each provider's own supported finalization contract. Deepgram Flux Multilingual returned usable text for 999 of the public clips.