Claude Sonnet 4.5 vs VibeVoice ASR Streaming 1.5B
At a Glance
| Compare | Claude Sonnet 4.5Anthropic |  VibeVoice ASR Streaming 1.5BMicrosoft |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | #36 of 4627.7 score · 2/3 sources · provisional · missing LiveBench · full-core range 18.5–51.8 | UnrankedNot in the 46-model eligible cohort |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $3.00Anthropic ↗ · Sep 3, 2026 | Not reported |
| Output priceFrom · USD / 1M tokens | $15.00Anthropic ↗ · Sep 3, 2026 | Not reported |
| Context windowMaximum documented tokens | 200K | Not reported |
| Model facts checked | Sep 3, 2026View model evidence → | Sep 2, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | Claude Sonnet 4.5 | VibeVoice-ASR-Streaming-1.5B |
|---|---|---|
| Developer | Anthropic | Microsoft |
| Family | Claude 4 | Vibevoice ASR Streaming |
| Model | Claude Sonnet 4.5 | VibeVoice-ASR-Streaming-1.5B |
| Version | Claude Sonnet 4.5 | VibeVoice-ASR-Streaming-1.5B |
| Lifecycle | active | active |
| Released | 2025-09-29 | 2026-09-03 |
| Knowledge cutoff | 2025-01-01 | Unknown |
| Input modalities | Text, Image | Audio |
| Output modalities | Text | Text |
| Context window | 200K | Unknown |
| Total parameters | Unknown | 2.8B |
| Active parameters | Unknown | Unknown |
| License | Unknown | mit |
| Open weights | No | Yes |
| API available | Yes | No |
| Self-hostable | No | Yes |
| Provider access | Anthropic (Standard) | Unknown |
| Capabilities | chat, generation, reasoning, structured_outputs, tools | diarization, hotwords, multilingual, streaming, transcription |
| Streaming chunk | Unknown | 22 frames |
| Streaming lookahead | Unknown | 4 frames |
| Supported languages | Unknown | Chinese, English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Spanish |
| Target sample rate | Unknown | 24000 Hz |
Claude Sonnet 4.5 Capabilities
VibeVoice ASR Streaming 1.5B Capabilities
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Primary Evidence
Sources and Freshness
Questions
Claude Sonnet 4.5 vs VibeVoice ASR Streaming 1.5B FAQs
Is Claude Sonnet 4.5 or VibeVoice ASR Streaming 1.5B better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Sonnet 4.5 and VibeVoice ASR Streaming 1.5B, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Sonnet 4.5 or VibeVoice ASR Streaming 1.5B?+
Only Claude Sonnet 4.5 has a directly sourced input price: $3.00 per million tokens. Only Claude Sonnet 4.5 has a directly sourced output price: $15.00 per million tokens.
Which has a larger context window, Claude Sonnet 4.5 or VibeVoice ASR Streaming 1.5B?+
Neither model has a larger sourced context window in this comparison. Claude Sonnet 4.5 is 200K and VibeVoice ASR Streaming 1.5B is —.
Which performs better in benchmarks, Claude Sonnet 4.5 or VibeVoice ASR Streaming 1.5B?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Claude Sonnet 4.5 or VibeVoice ASR Streaming 1.5B be self-hosted?+
VibeVoice ASR Streaming 1.5B is the only model in this pair currently marked as self-hostable. Claude Sonnet 4.5 is not marked open weight; VibeVoice ASR Streaming 1.5B is open weight.
Can Claude Sonnet 4.5 and VibeVoice ASR Streaming 1.5B understand images?+
Claude Sonnet 4.5 is documented with image input; VibeVoice ASR Streaming 1.5B is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Claude Sonnet 4.5 or VibeVoice ASR Streaming 1.5B?+
Neither has a larger sourced maximum output. Claude Sonnet 4.5 is 64K and VibeVoice ASR Streaming 1.5B is —.
Do Claude Sonnet 4.5 and VibeVoice ASR Streaming 1.5B support reasoning and tool use?+
Claude Sonnet 4.5: reasoning, tool calling, and image input. VibeVoice ASR Streaming 1.5B: none of these features are definitively sourced. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Sonnet 4.5 or VibeVoice ASR Streaming 1.5B?+
Claude Sonnet 4.5 has 1 sourced provider route; VibeVoice ASR Streaming 1.5B has 0, so Claude Sonnet 4.5 has broader tracked availability.
Which offers better value, Claude Sonnet 4.5 or VibeVoice ASR Streaming 1.5B?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.