Claude Fable 5.1 vs VibeVoice ASR Streaming 1.5B
At a Glance
| Compare | Claude Fable 5.1Anthropic |  VibeVoice ASR Streaming 1.5BMicrosoft |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | #1 of 4699.0 score · 3/3 sources · complete | UnrankedNot in the 46-model eligible cohort |
| CostLower is better · Published-token output estimate | #43 of 44$0.824 per LiveBench case | UnrankedNot in the 44-model eligible cohort |
| EfficiencyHigher is better · MM Efficiency v1.5 | #22 of 3851.7 score · 3/3 sources · complete | UnrankedNot in the 38-model eligible cohort |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $10.00Anthropic ↗ · Sep 3, 2026 | Not reported |
| Output priceFrom · USD / 1M tokens | $50.00Anthropic ↗ · Sep 3, 2026 | Not reported |
| Context windowMaximum documented tokens | 1,000K | Not reported |
| Model facts checked | Sep 2, 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 Fable 5.1 | VibeVoice-ASR-Streaming-1.5B |
|---|---|---|
| Developer | Anthropic | Microsoft |
| Family | Claude 5 1 | Vibevoice ASR Streaming |
| Model | Claude Fable 5.1 | VibeVoice-ASR-Streaming-1.5B |
| Version | Claude Fable 5.1 | VibeVoice-ASR-Streaming-1.5B |
| Lifecycle | active | active |
| Released | 2026-09-01 | 2026-09-03 |
| Knowledge cutoff | 2026-06-01 | Unknown |
| Input modalities | Text, Image | Audio |
| Output modalities | Text | Text |
| Context window | 1,000K | 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, 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 Fable 5.1 Capabilities
VibeVoice ASR Streaming 1.5B Capabilities
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Primary Evidence
Sources and Freshness
Questions
Claude Fable 5.1 vs VibeVoice ASR Streaming 1.5B FAQs
Is Claude Fable 5.1 or VibeVoice ASR Streaming 1.5B better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Fable 5.1 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 Fable 5.1 or VibeVoice ASR Streaming 1.5B?+
Only Claude Fable 5.1 has a directly sourced input price: $10.00 per million tokens. Only Claude Fable 5.1 has a directly sourced output price: $50.00 per million tokens.
Which has a larger context window, Claude Fable 5.1 or VibeVoice ASR Streaming 1.5B?+
Neither model has a larger sourced context window in this comparison. Claude Fable 5.1 is 1,000K and VibeVoice ASR Streaming 1.5B is —.
Which performs better in benchmarks, Claude Fable 5.1 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 Fable 5.1 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 Fable 5.1 is not marked open weight; VibeVoice ASR Streaming 1.5B is open weight.
Can Claude Fable 5.1 and VibeVoice ASR Streaming 1.5B understand images?+
Claude Fable 5.1 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 Fable 5.1 or VibeVoice ASR Streaming 1.5B?+
Neither has a larger sourced maximum output. Claude Fable 5.1 is 128K and VibeVoice ASR Streaming 1.5B is —.
Do Claude Fable 5.1 and VibeVoice ASR Streaming 1.5B support reasoning and tool use?+
Claude Fable 5.1: 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 Fable 5.1 or VibeVoice ASR Streaming 1.5B?+
Claude Fable 5.1 has 1 sourced provider route; VibeVoice ASR Streaming 1.5B has 0, so Claude Fable 5.1 has broader tracked availability.
Which offers better value, Claude Fable 5.1 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.