Claude Fable 5.1 vs Hy4 preview
At a Glance
| Compare | Claude Fable 5.1Anthropic |  Hy4 previewTencent |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v4.4 | #2 of 5799.0 score · 3/3 sources · complete | UnrankedNot in the 57-model eligible cohort |
| CostLower is better · Published-token output estimate | #27 of 27$0.824 per LiveBench case | UnrankedNot in the 27-model eligible cohort |
| EfficiencyHigher is better · MM Efficiency v1.9 | #14 of 2749.5 score · 3/3 sources · complete | UnrankedNot in the 27-model eligible cohort |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $10.00Anthropic ↗ · Sep 3, 2026 | $0.834Deepinfra ↗ · Oct 19, 2026 |
| Output priceFrom · USD / 1M tokens | $50.00Anthropic ↗ · Sep 3, 2026 | $2.501Deepinfra ↗ · Oct 19, 2026 |
| Context windowMaximum documented tokens | 1,000K | 1,000K |
| 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
| Benchmark | Claude Fable 5.1 | Hy4 preview |
|---|---|---|
| LMArena Agent Arenaagent-2026-10-16-a64ca3b12b6e · outcome_score · leader | 14.03100% of row best · score · Claude Fable 5.1 (Max); 95% CI [12.03932907, 16.02502568]; sessions 16374; observations 1913479; rank 3 | 2.6890% of row best · score · Hy4 preview; 95% CI [2.00929922, 3.35139547]; sessions 84828; observations 8314177; rank 20 |
| Overall ResultCounted from the protocol-matched rows above | 1 benchmark winNo overall winner | 0 benchmark winsNo overall winner |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Side-by-Side Facts
| Field | Claude Fable 5.1 | Hy4 preview |
|---|---|---|
| Developer | Anthropic | Tencent |
| Family | Claude 5 1 | Hy4 |
| Model | Claude Fable 5.1 | Hy4 preview |
| Version | Claude Fable 5.1 | Hy4 preview |
| Lifecycle | active | preview |
| Released | 2026-09-01 | 2026-08-28 |
| Knowledge cutoff | 2026-06-01 | Unknown |
| Input modalities | Text, Image | Text |
| Output modalities | Text | Text |
| Context window | 1,000K | 1,000K |
| Total parameters | Unknown | 770B |
| Active parameters | Unknown | 49B |
| License | Unknown | apache-2.0 |
| Open weights | No | Yes |
| API available | Yes | Yes |
| Self-hostable | No | Yes |
| Provider access | Anthropic (Standard) | Deepinfra (Standard), Openrouter (Standard) |
| Capabilities | chat, generation, reasoning, tools | chat, generation, reasoning, tools |
Claude Fable 5.1 Capabilities
Hy4 preview Capabilities
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Claude Fable 5.1Anthropic | vs |  DeepSeek-V4-Flash-Vision-ExpDeepSeek | cross-developer peersimage, text |
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Claude Fable 5.1Anthropic | vs |  Qwen3.7 MaxQwen | cross-developer peersimage, text |
Primary Evidence
Sources and Freshness
Questions
Claude Fable 5.1 vs Hy4 preview FAQs
Is Claude Fable 5.1 or Hy4 preview better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Claude Fable 5.1 and Hy4 preview, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Claude Fable 5.1 or Hy4 preview?+
Claude Fable 5.1 is $10.00 and Hy4 preview is $0.834 per million tokens, so Hy4 preview is cheaper on this metric. Claude Fable 5.1 is $50.00 and Hy4 preview is $2.501 per million tokens, so Hy4 preview is cheaper on this metric.
Which has a larger context window, Claude Fable 5.1 or Hy4 preview?+
Both models have the same sourced context window: 1,000,000 tokens each.
Which performs better in benchmarks, Claude Fable 5.1 or Hy4 preview?+
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 Hy4 preview be self-hosted?+
Hy4 preview is documented as self-hostable; Claude Fable 5.1 is documented as not self-hostable. Claude Fable 5.1 is not marked open weight; Hy4 preview is open weight.
Can Claude Fable 5.1 and Hy4 preview understand images?+
Claude Fable 5.1 is documented with image input; Hy4 preview is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Claude Fable 5.1 or Hy4 preview?+
Claude Fable 5.1 has a sourced maximum output of 128,000 tokens; Hy4 preview's maximum output is not reported. A larger limit cannot be determined.
Do Claude Fable 5.1 and Hy4 preview support reasoning and tool use?+
Claude Fable 5.1: reasoning, tool calling, and image input. Hy4 preview: reasoning and tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, Claude Fable 5.1 or Hy4 preview?+
Claude Fable 5.1 has 1 sourced provider route; Hy4 preview has 2, so Hy4 preview has broader tracked availability.
Which offers better value, Claude Fable 5.1 or Hy4 preview?+
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.