Voice Input Tools
Free, interactive tools for voice input power users — calculate STT costs, test your WPM, build polish prompts, and check language support. No account required.
Download OpenTypeless FreeAll Tools
Click any tool to use it — no signup, no login
STT Cost Calculator
Estimate your monthly speech-to-text API cost across Deepgram, OpenAI Whisper, Groq, and AssemblyAI. Set sessions per day and clip duration — see side-by-side costs instantly.
Voice WPM Speed Test
Measure your dictation words-per-minute. Speak for 60 seconds, paste the transcription, and get your WPM with a rating. See how your speaking speed compares to typing.
LLM Polish Prompt Builder
Build a custom AI polishing prompt for your voice input workflow. Choose tone, target language, add custom dictionary terms and extra instructions — copy the ready-to-use prompt.
STT Language Support Checker
Search any language and instantly see which STT providers support it — Deepgram, OpenAI Whisper, Groq Whisper, AssemblyAI, and GLM-ASR. No signup, instant results.
Built for Real Voice Input Users
These tools are built and maintained by the OpenTypeless team — the same people who built the free, open-source voice input app. All tools are free forever and work without an account.