AssemblyAI vs OpenRouter

AssemblyAI

OpenRouter

AssemblyAI · 11 features

• Advanced Prompting — Streaming with disfluency + code-switching + realtime diarization.
• Audio Intelligence — Sentiment, topic detection, summarization, entity detection, content safety, IAB…
• Auto Punctuation — Smart capitalization + punctuation.
• Keyterm Prompting — Boost accuracy for domain vocabulary.
• LeMUR (LLM framework) — Run LLMs over transcripts: Q&A, summary, action items.
• Medical Mode — Specialized for clinical + medical vocabulary.
• PII Redaction — Auto-redact credit cards, SSNs, addresses, emails.
• Pre-recorded Transcription — Upload audio/video URL or file → transcript.
• Realtime Streaming — WebSocket-based low-latency STT.
• Speaker Diarization — Identify who spoke when.
• Webhooks — Auto-notify when transcription finishes.

OpenRouter · 15 features

• 300+ Models — Claude, GPT, Gemini, Llama, Mistral, Qwen, DeepSeek, Cohere, Grok + open-source.
• 60+ Providers — Anthropic, OpenAI, Google, Together, Fireworks, Groq, DeepInfra, Replicate, etc.
• Auto Fallback — Automatic retry to backup provider on failure.
• Bring Your Own Key — Use your own provider keys → pay providers directly + no platform fee.
• Credit System — Prepay credits via card, crypto, or bank.
• Data Retention Controls — Opt-out of training/retention per provider.
• Free Models Tier — 25+ models available at $0 (limited rate).
• Prompt Caching — Automatic cache for identical prefixes (provider-dependent).
• Provider Preferences — Pin preferred providers per request or default.
• Rankings & Stats — Public leaderboard of most-used models.
• Regional Routing — Route requests to specific geographic regions.
• Streaming — SSE + partial completions.
• Structured Outputs — JSON-mode + JSON schema across supporting models.
• Tool Use / Function Calling — Unified tool calling across providers.
• Unified OpenAI-Compat API — Same endpoint for every model + provider.