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GPT-4o Transcribe Diarize

OpenAI · Released Oct 17, 2025 · Closed weights

Speech-to-text model with built-in speaker diarization

Price per 1M tokens
$2.5 / $10
input / output · OpenAI
Context window
16K
tokens in · 2K out
Open in the timeline
BENCHMARKS

Not in the Epoch Capabilities Index. Epoch benchmarks what it can run, so this is a gap in coverage, not a poor result.

OpenAI's past year

23 release days in the past year, about one every 16 days. The next is expected around Nov 5, 2026. Forecasts ↗

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Specifications

RELEASE DATEOct 17, 2025
WEIGHTSClosed weights
CONTEXT WINDOW16K
MAX OUTPUT2K
REASONINGNot listed
TOOL CALLINGNot listed
INPUTStext, audio/flac, audio/mpeg, audio/mp4, audio/ogg, audio/wav, audio/webm
OUTPUTStext

Models.dev record ↗

Specifications and prices from Models.dev; availability and limits may differ by provider. Benchmarks from Epoch AI (CC BY 4.0), LiveBench and the other sources named above.