Deepgram
Deepgram is a developer speech platform best known for fast, cheap, accurate speech-to-text via its Nova model family, plus Aura text-to-speech and a voice-agent API. Pricing is pay-as-you-go per minute (Nova STT from roughly $0.0077/min, with promotional rates lower) and $200 in free credits to start, making it one of the cheapest production STT options. It's optimized for real-time, high-throughput voice applications and competes directly with AssemblyAI. Like AssemblyAI, it's infrastructure for builders, not a consumer-facing tool.
Fireflies.ai
Fireflies.ai is a meeting intelligence platform that records, transcribes, and analyzes your sales calls, team meetings, and client calls - then surfaces insights like sentiment, talk-to-listen ratios, and key topics.
Deepgram edges Fireflies.ai on aggregate — 86 vs 71.
Among the fastest and cheapest production speech-to-text APIs -- a developer tool, not a consumer app, and a direct AssemblyAI rival. Fireflies.ai still wins for buyers who prioritise cross-meeting analytics reveal patterns otter.ai can't surface. Both tools are independently scored — the right pick depends on which dimensions matter most for your workflow.
Side-by-side, every cell sourced.
Pricing pulled from each tool's public site. Scores follow the BigBang Score rubric — pricing transparency, free tier, API support, update frequency, unique factor, documentation, and community.
Use-case picks.
Cut through the spec sheet. Here's what we'd recommend depending on what matters most.
Pick Deepgram if…
You prioritise very fast, low-latency speech-to-text and among the cheapest per-minute stt pricing.
Pick Fireflies.ai if…
You prioritise cross-meeting analytics reveal patterns otter.ai can't surface and talk-to-listen ratio and sentiment analysis for sales coaching.
Editorial pick
Deepgram wins our composite score (86/100). It edges ahead on aggregate — but the right tool depends on which dimensions matter most.
Related head-to-heads in AI audio.
Deepgram vs ElevenLabs — AI audio
BigBang Scores 86/100 vs 88/100. Pricing, capabilities, and editorial verdict inside.
Deepgram vs AssemblyAI — AI audio
BigBang Scores 86/100 vs 88/100. Pricing, capabilities, and editorial verdict inside.
Deepgram vs Cartesia — AI audio
BigBang Scores 86/100 vs 88/100. Pricing, capabilities, and editorial verdict inside.
Deepgram vs Fireflies.ai - frequently asked.
Direct answers tuned for AI search engines (ChatGPT, Perplexity, Claude) and Google's People Also Ask.
The short answer.
Deepgram wins on aggregate, but Fireflies.ai pulls ahead on specific axes - the spec sheet above shows where each one earns its keep.