Best AI transcription API

Combined ranking

1. 1
   Deepgram—15 pts

   GPT #1Claude #1Gemini #1Grok —

   Nova-3 and Flux combine excellent real-time accuracy, very low latency, strong noisy-audio handling, diarization, keyterm prompting, flexible deployment, and competitive pricing

   To stay #1 Expand Nova-3’s multilingual coverage to match the broadest competitors

2. 2
   AssemblyAI—11 pts

   GPT #3Claude #2Gemini #2Grok —

   Top-tier accuracy plus the richest audio-intelligence layer (diarization, sentiment, PII redaction, summarization via LeMUR) in one API, with excellent docs and reliability

   To rank higher Bring real-time streaming latency and price down to Deepgram's level so it wins both batch and live use cases

3. 3
   OOpenAI Whisper API—6 pts

   GPT —Claude —Gemini #3Grok #3

   Best-in-class out-of-the-box accuracy across 99+ languages, excellent handling of noisy background audio, and highly competitive pricing for batch transcription.

   To rank higher Add native support for real-time WebSocket streaming and built-in speaker diarization.

4. 4
   DDeepgram Nova-3 / Flux—5 pts

   GPT —Claude —Gemini —Grok #1

   Leads benchmarks in accuracy (lowest WER on noisy/conversational audio), ultra-low latency for real-time streaming, competitive pricing (~$0.004-0.014/min), strong diarization and multilingual support for production voice agents.

   To rank higher Broaden native high-accuracy languages beyond English-dominant to match top multilingual rivals without fallback degradation

5. 5
   OpenAIincumbent—4 pts

   GPT #5Claude #3Gemini —Grok —

   Dirt-cheap, dead-simple API with massive ecosystem support, and open-source Whisper as an escape hatch for self-hosting

   To rank higher Ship first-class speaker diarization and robust word-level timestamps instead of leaving them to third-party wrappers

6. 6
   AAssemblyAI Universal-3/3.5 Pro—4 pts

   GPT —Claude —Gemini —Grok #2

   Exceptional developer experience with clean SDKs, built-in audio intelligence (sentiment, topics, entities, summarization via LeMUR), high accuracy on challenging audio, generous free tier/credits for prototyping.

   To rank higher Reduce pricing for high-volume streaming/real-time to undercut Deepgram more aggressively on cost-efficiency

7. 7
   ElevenLabs—4 pts

   GPT #2Claude —Gemini —Grok —

   Scribe v2 delivers outstanding batch accuracy across 90+ languages, rich diarization, precise timestamps, audio-event tagging, and a fast realtime model

   To rank higher Lower realtime transcription pricing

8. 8
   Gladia—3 pts

   GPT —Claude —Gemini #4Grok #5

   Outstanding multilingual code-switching capabilities and predictable pricing that bundles diarization and basic intelligence features into its core rate.

   To rank higher Expand its global edge network infrastructure to lower latency for real-time voice agents.

9. 9
   Google Cloud Speech-to-Textincumbent—3 pts

   GPT #4Claude #5Gemini —Grok —

   Chirp 3 offers strong multilingual accuracy, streaming and batch processing, automatic language detection, adaptation, denoising, global infrastructure, and enterprise-grade scaling

   To rank higher Make Chirp 3’s diarization available consistently across streaming and more languages

10. 10
    ElevenLabs Scribe—2 pts

    GPT —Claude #4Gemini —Grok —

    Benchmark-leading accuracy across 90+ languages, strong diarization and audio-event tagging, and momentum from the broader ElevenLabs voice stack

    To rank higher Mature its real-time streaming offering and lower per-hour pricing to compete for high-volume production workloads

11. 11
    EElevenLabs Scribe v2—2 pts

    GPT —Claude —Gemini —Grok #4

    Superior multilingual accuracy and code-switching, fast transcription with keyterm prompting, strong for conversational workflows and TTS/STT integration.

    To rank higher Expand real-time streaming maturity and add more advanced audio intelligence features like diarization depth

12. 12
    SSpeechmatics—1 pts

    GPT —Claude —Gemini #5Grok —

    Enterprise-grade security with support for fully air-gapped on-premises deployments and high transcription accuracy for complex global accents.

    To rank higher Modernize the developer experience with simplified API documentation and transparent pay-as-you-go pricing for smaller startups.

By model

Tracked by ModelsAgree · rank 1 = 5 pts … rank 5 = 1 pt · re-polled continuously