Claude Fable 5 vs Gemini 3.1 Pro Preview
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
- ✓Need higher intelligence index (59.9) for complex reasoning tasks
- ✓Require safety-aligned responses and detailed file-based reasoning with text-visual inputs
- ✓Prioritize coherent handling of very large contexts without native audio/video needs
Choose Gemini 3.1 Pro Preview if you need
- ✓Need fast output at 122.11 t/s and lower cost of $12 per 1M tokens
- ✓Require native support for audio, image, video, and text modalities
- ✓Handle large-scale document analysis with 1M+ token context on a budget
Verdict
Claude Fable 5 leads in intelligence (59.9 vs 46.5) and safety-aligned text-visual reasoning for complex file inputs, while Gemini 3.1 Pro Preview wins on speed (122.11 t/s), price ($12 vs $50 per 1M tokens), and native audio/video support. Both handle ~1M-token contexts effectively, but Claude's higher index suits precision tasks and Gemini's preview status introduces inconsistency risks. Overall, Claude edges capability depth while Gemini offers broader accessibility and modality coverage.
Claude Fable 5 vs Gemini 3.1 Pro Preview: side by side
| Spec | Claude Fable 5 | Gemini 3.1 Pro Preview | Winner |
|---|---|---|---|
| Intelligence | 59.9 | 46.5 | Claude Fable 5 |
| Output speed | — | 122 t/s | Tie |
| Output price | $50.00/1M | $12.00/1M | Gemini 3.1 Pro Preview |
| Context | 1000K | 1049K | Gemini 3.1 Pro Preview |
| Params | — | — | Tie |
| Provider | Anthropic | Tie |
Detailed analysis
Intelligence
Winner: Claude Fable 5Claude Fable 5 scores 59.9 on intelligence_index compared to Gemini 3.1 Pro Preview's 46.5. This gives Claude the edge for tasks needing stronger reasoning depth. Both are proprietary multimodal models but the index gap favors Claude on capability.
Pricing & Speed
Winner: Gemini 3.1 Pro PreviewGemini 3.1 Pro Preview costs $12 per 1M tokens versus Claude Fable 5's $50 and delivers 122.11 t/s output speed. Claude's speed is unspecified but noted as slower on maximum contexts. These facts make Gemini the clear choice for cost and velocity.
Multimodal Capabilities
Winner: Gemini 3.1 Pro PreviewGemini 3.1 Pro Preview offers native audio, image, video, and text support with strong multi-modality integration. Claude Fable 5 provides strong text-visual integration but lacks native audio or video. This gives Gemini broader modality coverage per the listed strengths.
Context Handling
Winner: TieBoth models support roughly 1M-token contexts (Claude at 1000000, Gemini at 1048576). Claude emphasizes coherent handling of very large inputs while Gemini highlights effectiveness for large-scale document analysis. Limitations note slower inference for Claude and high resource use for Gemini at max lengths.
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
Gemini 3.1 Pro Preview
Pros
- +Handles up to 1M token contexts
- +Native support for audio, image, video, and text
- +Strong integration of multiple modalities
Cons
- –Preview model may show inconsistent outputs
- –High resource use with maximum context
- –Requires verification on complex tasks
Summary: Claude Fable 5 vs Gemini 3.1 Pro Preview
Choose Claude Fable 5 when intelligence, safety, and precise text-visual reasoning matter most despite higher cost. Select Gemini 3.1 Pro Preview for speed, affordability, and full native multimodal support including audio and video. The facts show clear trade-offs with no single overall winner.
Frequently asked questions
Claude Fable 5 scores higher on intelligence (59.9 vs 46.5) while Gemini 3.1 Pro Preview is faster and cheaper with more modalities; choice depends on whether depth or speed/breadth is prioritized.