Model Comparison
Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback)
vs. K3
Comparing 2 AI models · 7 benchmarks · Anthropic, Kimi
Recommended Pick
KiK38 metric winsStrongest on: Value, Input price, Output price
Best Value
K3
100.0 value score
65.0 reasoning / $6.00/1M
Lowest Price
K3
$3.00/1M input price
Best Reasoning
Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback)
68.6 reasoning score
Blends available reasoning benchmarks
Best for Coding
Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback)
76.5 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Best value
K3 has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
K3 is 3.3x cheaper on input tokens than Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback).
Reasoning gap
Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback) leads K3 by 3.6 points on reasoning.
Coding gap
Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback) leads K3 by 0.3 points on coding.
Top-pick rationale
K3 wins 8 measurable categories, including Value, Input price, Output price, Blended price.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback)
Anthropic
TTFT
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Time
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tok/s
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Tokens
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Cost
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K3
Kimi
TTFT
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Time
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tok/s
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Tokens
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Cost
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Which answer was more useful?
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Full Comparison
| Metric | An Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback) | Top Pick Ki K3 |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $10.00/1M | $3.00/1M |
| Output Cost | $50.00/1M | $15.00/1M |
| Blended (3:1) | $20.00/1M | $6.00/1M |
| Specifications | ||
| Organization | Anthropic | Kimi |
| Release Date | Jun 9, 2026 | Jul 16, 2026 |
| Performance & Speed | ||
| Throughput | 60.2 tok/s | 58.5 tok/s |
| TTFT | 64871ms | 1348ms |
| Latency | 64871ms | 35534ms |
| Composite Indices | ||
| Value Score | 31.7 | 100.0 |
| Reasoning Score | 68.6 | 65.0 |
| Intelligence | 59.9 | 57.1 |
| Coding | 76.5 | 76.2 |
| Standard Benchmarks | ||
| GPQA | 92.6% | 93.5% |
| HLE | 53.3% | 44.3% |
| SciCode | 60.2% | 58.7% |
| LCR | 70.0% | 74.7% |
| IFBench | 63.5% | — |
| TAU-bench v2 | 98.5% | — |
| TerminalBench Hard | 62.9% | — |
Key Takeaways
K3 offers the best value at $3.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback) has the strongest reasoning profile with a 68.6 reasoning score,combining the available reasoning-heavy benchmarks.
Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback) reaches a 76.5 coding index,making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
K3
- Cost-sensitive applications
- High-volume processing
