Claude Fable 5.1 vs DeepSeek V4 Flash 0731: Release Comparison
Comparison of the Claude Fable 5.1 and DeepSeek V4 Flash 0731 releases: 5 and 2 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 7 models.
- For intelligence, Claude Fable 5.1 scores highest: Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback) at 53, against DeepSeek V4 Flash Vision (Reasoning, Max Effort) at 35 for DeepSeek V4 Flash 0731.
- For output speed, DeepSeek V4 Flash 0731 is fastest: DeepSeek V4 Flash Vision (Reasoning, Max Effort) at 216 t/s, against Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback) at 66 t/s for Claude Fable 5.1.
- For cost per task, DeepSeek V4 Flash 0731 is cheapest: DeepSeek V4 Flash 0731 (Reasoning, Max Effort) at $0.22, against Claude Fable 5.1 (Adaptive Reasoning, Low Effort, Default Fallback) at $2.37 for Claude Fable 5.1.
Releases compared
Intelligence
Artificial Analysis Intelligence Index
Intelligence Index vs. Cost per Intelligence Index Task
Cost
Cost per Intelligence Index Task
Speed & Latency
Output Speed
Capability Scores
Capability Indices
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2, AA-Briefcase, Terminal-Bench 4.0 · Higher is better
Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2, AA-Briefcase, AA-LCR v1.1 · Higher is better
Further details
Input modality | Output modality | Weights | Provider Benchmarks | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback) |  Anthropic | 53 | 57 | 60 | 61 | 58 | 57 | 63 | $7.63 | $7.2 | $10.00 | $50.00 | $0.25 | $13,129 | 78k | 47k | 188M | 66 | 234.98s | 234.98s | 242.56s | 755.04s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) | Anthropic | 53 | 56 | 58 | 61 | - | 57 | 62 | $5.98 | $7.2 | $10.00 | $50.00 | $0.25 | $9,063 | 61k | 34k | 121M | 58 | 85.53s | 85.53s | 94.12s | 677.63s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Claude Fable 5.1 (Adaptive Reasoning, High Effort, Default Fallback) | Anthropic | 51 | 54 | 56 | 58 | - | 55 | 60 | $3.91 | $7.2 | $10.00 | $50.00 | $0.25 | $5,242 | 38k | 19k | 62M | 51 | 10.95s | 10.95s | 20.82s | 469.10s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Claude Fable 5.1 (Adaptive Reasoning, Medium Effort, Default Fallback) | Anthropic | 49 | 52 | 54 | 57 | - | 52 | 58 | $2.98 | $7.2 | $10.00 | $50.00 | $0.25 | $3,983 | 28k | 12k | 44M | 51 | 7.47s | 7.47s | 17.31s | 333.43s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Claude Fable 5.1 (Adaptive Reasoning, Low Effort, Default Fallback) | Anthropic | 47 | 49 | 52 | 54 | - | 49 | 55 | $2.37 | $7.2 | $10.00 | $50.00 | $0.25 | $3,158 | 22k | 8k | 33M | 50 | 5.13s | 5.13s | 15.04s | 280.39s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| DeepSeek V4 Flash Vision (Reasoning, Max Effort) |  DeepSeek | 35 | 38 | 44 | 37 | - | 35 | 40 | $0.31 | $0.2 | $0.44 | $1.32 | $0.014 | $445 | 69k | 46k | 170M | 216 | 1.16s | 10.42s | 12.74s | 239.28s | 284B 13B active at inference time | 1M | Aug 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - |  | |
| DeepSeek V4 Flash 0731 (Reasoning, Max Effort) | DeepSeek | 35 | 38 | 43 | 38 | 35 | 35 | 40 | $0.22 | $0.2 | $0.44 | $1.32 | $0.014 | $474 | 62k | 45k | 242M | 215 | 1.53s | 10.83s | 13.16s | 212.39s | 284B 13B active at inference time | 1M | Jul 2026 | - | Yes | Supports: text | Supports: text |    +12 | |||