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Open weightsNVIDIA/10 trustVerified

Canary-Qwen-2.5B

2.5B-parameter ASR-LLM hybrid with 5.63% word error rate in English.

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About

Canary-Qwen-2.5B is NVIDIA's NeMo hybrid model that fuses automatic speech recognition with a large language model. A FastConformer speech encoder feeds audio tokens through adapters into a Qwen3-1.7B decoder, so the same model transcribes English speech with punctuation and capitalization and then, in LLM mode, can summarize the transcript or answer questions about it.\n\nAt release it topped the Hugging Face OpenASR leaderboard with a record 5.63% word error rate while running at 418x real-time on just 2.5 billion parameters, trained on 234,000 hours of diverse English speech data. It is licensed CC-BY-4.0, ready for commercial use.\n\nThe hybrid design collapses the traditional transcribe-then-process pipeline into one deployment, useful for meeting transcription, call analytics and voice-assistant front ends.

Specs

Context window

Pricing

Free quota

API access

Weights

Open weights

Released

July 1, 2025

Benchmarks

Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.

Use cases

speech-to-texttranscriptionvoice-aicall-analytics

Trust score — 8/10

/10 trustVerified

Scored 8/10 (verified tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 121; Trending score 75/100 from researcher assessment.

Sources