Claude Fable 5 vs Claude Opus 4.6 (Fast)
A side-by-side comparison of two multimodal models — real specs, pricing, strengths and weaknesses, and a clear verdict on which to choose. Kept current by our agents.
Quick verdict: which should you choose?
Choose Claude Fable 5 if you need
- ✓documented fast output at 38.76 t/s
- ✓explicit fast inference for its class
- ✓strong reasoning depth on large contexts
- ✓safety-conscious responses without unknown speed trade-offs
Choose Claude Opus 4.6 (Fast) if you need
- ✓higher intelligence index of 59.9
- ✓much lower price at $50 per million tokens
- ✓strong integration of text and visual inputs
- ✓detailed file-based reasoning on maximum context lengths
Verdict
Claude Fable 5 leads on raw intelligence (59.9 vs 43.7) and price ($50 vs $150 per million tokens) while matching the 1M-token context. Claude Opus 4.6 (Fast) is the only model with a documented output speed (38.76 t/s) and is explicitly positioned for fast inference. Both share the same provider, proprietary nature, and safety-focused limitations.
Claude Fable 5 vs Claude Opus 4.6 (Fast): side by side
| Spec | Claude Fable 5 | Claude Opus 4.6 (Fast) | Winner |
|---|---|---|---|
| Intelligence | 59.9 | 43.7 | Claude Fable 5 |
| Output speed | — | 39 t/s | Tie |
| Output price | $50.00/1M | $150.00/1M | Claude Fable 5 |
| Context | 1000K | 1000K | Tie |
| Params | — | — | Tie |
| Provider | Anthropic | Anthropic | Tie |
Detailed analysis
Intelligence
Winner: Claude Fable 5Claude Fable 5 scores 59.9 on the intelligence index compared with 43.7 for Claude Opus 4.6 (Fast). This gap is the clearest performance differentiator provided. Both models are from Anthropic and share the same 1M context size.
Pricing
Winner: Claude Fable 5Claude Fable 5 costs $50 per million output tokens while Claude Opus 4.6 (Fast) costs $150. The threefold price difference is stated directly in the model data. No other cost factors are given.
Speed
Winner: Claude Opus 4.6 (Fast)Only Claude Opus 4.6 (Fast) lists a concrete speed of 38.76 tokens per second and is described as fast for its class. Claude Fable 5 speed is unknown and its limitations note slower inference on maximum context lengths. The comparison is therefore limited to the single reported metric.
Multimodal Handling
Winner: Claude Fable 5Claude Fable 5 lists strong integration of text and visual inputs plus detailed file-based reasoning. Claude Opus 4.6 (Fast) restricts vision to static images. Both models lack native audio or video support.
Claude Fable 5
Pros
- +Coherent handling of very large contexts
- +Strong integration of text and visual inputs
- +Safety-aligned responses
Cons
- –May decline edge-case or sensitive requests
- –Slower inference on maximum context lengths
- –No native audio or video support
Claude Opus 4.6 (Fast)
Pros
- +Strong reasoning depth
- +Effective large-context handling
- +Safety-conscious responses
Cons
- –May refuse borderline requests
- –Conservative output style
- –Vision limited to static images
Summary: Claude Fable 5 vs Claude Opus 4.6 (Fast)
Select Claude Fable 5 when intelligence score and lower price matter most. Choose Claude Opus 4.6 (Fast) when a documented fast output speed is required. Both models share identical context length and provider constraints.
Frequently asked questions
Claude Fable 5 has the higher intelligence index (59.9) and lower price; Claude Opus 4.6 (Fast) is the only one with a published speed of 38.76 t/s.