Best Open Speech Recognition (ASR) Models in 2026: WER, Languages, Latency, and License Compared

MarkTechPost · 1 month ago · 21

Multiple open-source speech recognition models now compete at similar accuracy levels, with Cohere's Transcribe (5.42% WER), IBM's Granite Speech 4.1 (5.33%), and others within one percentage point of each other. The Open ASR Leaderboard rankings are unreliable because models are evaluated on different test sets—excluding easier benchmarks like TED-LIUM artificially inflates some scores. Model selection now depends on license type, language support, streaming capability, and cost per audio-hour rather than benchmark rank, making this a procurement decision rather than a research one.