Speechmatics vs Gladia: Which Speech-to-Text API Delivers?

Both platforms share a 4.8 out of 5 G2 rating, but Speechmatics has more than double the reviews (52 vs 23). In head-to-head G2 Spring 2026 metrics, Speechmatics leads on speaker identification (84% vs 75%), installation and setup ease (97% vs 93%), secure communication (93% vs 88%), regulatory compliance (95% vs 93%), ease of use (94% vs 92%), and average time to ROI (3 months vs 5 months).

No. Gladia's speaker diarisation is available in batch mode only, not in real-time streaming. To get speaker separation in real-time, Gladia requires multi-channel audio input which increases cost. Speechmatics offers best-in-class real-time speaker diarisation at no extra charge — critical for voice agents, live meeting transcription, and real-time call analytics.

Gladia's on-premises deployment is currently paused. Speechmatics offers mature, production-ready on-premises deployment alongside on-device and fully air-gapped options. This is essential for enterprises in regulated industries like healthcare, finance, defence, and government that need full data sovereignty.

Speechmatics offers transparent per-hour pricing with features like speaker diarisation and custom dictionary included at no extra charge. Gladia charges separately for add-on features on top of their base per-hour rate, making total costs harder to predict at enterprise scale. Speechmatics charges no penalty for opting out of model training.

Speechmatics supports 55+ production-proven languages with the Ursa 2 model covering all accents and dialects. Gladia claims 100+ languages with code-switching support. Speechmatics' language support is backed by G2-verified enterprise reviews and proven across diverse production deployments worldwide.

Both platforms hold ISO 27001, SOC2 Type II, HIPAA, and GDPR compliance. However, Speechmatics scores higher on G2 for secure communication (93% vs 88%) and regulatory compliance (95% vs 93%). Speechmatics also offers air-gapped and on-device deployment for environments requiring the highest level of security and data isolation.

Yes. Speechmatics offers a straightforward REST API and WebSocket interface for real-time transcription. We offer $200 in free credits with the code SWITCH200 and hands-on migration support from our customer success team. G2 reviewers rate Speechmatics 97% for installation and setup ease versus Gladia's 93%.

Yes. Speechmatics includes a dedicated Medical Model purpose-built for clinical documentation — trained on SNOMED CT terminology, FDA/MHRA drug names, and real clinical audio. It delivers up to 50% fewer critical errors compared to general models, with 96% medical term recall, available for real-time transcription across English, French, German, Spanish, Danish, and Norwegian. Gladia has no dedicated medical speech model. See the Medical Model launch announcement and the Humetrix case study — where Speechmatics replaced Whisper for multilingual clinical transcription across 27 languages at the Paris 2024 Olympics.

Melia is Speechmatics’ new multilingual speech-to-text model with native code-switching across all 55+ supported languages in a single pass — no per-language model selection needed. It outperforms Deepgram, Microsoft, and AssemblyAI on most FLEURS language benchmarks, making it the strongest option for multilingual content, accented speakers, and global deployments. Priced from $0.129/hr for batch (10 hrs/month free), it’s also the most affordable model in the Speechmatics range. Gladia has no equivalent native cross-language code-switching model.