High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Search AI tools, categories, and leaderboards
AssemblyAI records 487,071 monthly visits with +6.4% month-over-month growth and Freemium, Contact for Pricing pricing. Code Arena records 35,827,928 monthly visits with +19.4% growth and Free pricing.

Speech-to-text and voice intelligence APIs for developers
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | assemblyai.com | arena.ai |
| Pricing Model | Freemium, Contact for Pricing | Free |
| Monthly Visits | 487.07K (487,071) | 35.83M (35,827,928) |
| MoM Traffic Delta |
|---|
| +29.29K (+6.4%) |
| +5.83M (+19.4%) |
| Primary Market & Share | 🇧🇷 Brazil (34.3%) | 🇮🇳 India (13.1%) |
|---|
| Direct Visits / mo | 310.75K | 24.34M |
|---|
| User Rating | 5 | 5 |
|---|
| Supported Platforms | Website | Website |
|---|

Speech-to-text and voice intelligence APIs for developers
Choose pre-recorded transcription for files, a realtime API for live streams and voice agents, or a synchronous endpoint for short clips and dictation.
Layer summarization, sentiment, topic detection, PII redaction, content moderation and guardrails onto transcripts without building your own models.
AssemblyAI-TTS-1 is trained on real phone calls for natural, low-latency speech, targeted at IVR and voice-agent use cases.
Flagship models emphasise exact transcription, speaker labels and native code-switching across many languages, supported by published benchmarks.

Battle-test AI coding models side by side
Send the same coding prompt to multiple leading models and compare their generated apps and logic side by side.
Watch models construct web apps and websites live, so you can see process and output, not just the final file.
Projects go beyond one-off snippets, testing how well a model structures components, routes, and styles together.
Track which coding models accumulate the most wins over time to identify consistently strong performers.
High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
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