Model Comparison
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
vs. GPT-6 Astra (max)
Comparing 2 AI models · 0 benchmarks · Anthropic, OpenAI
Recommended Pick
AnClaude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)4 metric winsStrongest on: Value, Reasoning, Intelligence
Best Value
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
100.0 value score
64.8 reasoning / $20.00/1M
Lowest Price
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
$10.00/1M input price
Best Reasoning
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
64.8 reasoning score
Blends available reasoning benchmarks
Best for Coding
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
80.7 coding index
Differences That Matter
Best value
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Reasoning gap
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) leads GPT-6 Astra (max) by 3.6 points on reasoning.
Coding gap
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) leads GPT-6 Astra (max) by 3.8 points on coding.
Top-pick rationale
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) wins 4 measurable categories, including Value, Reasoning, Intelligence, Coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
Anthropic
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GPT-6 Astra (max)
OpenAI
TTFT
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Which answer was more useful?
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OpenAI-compatible inference
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Full Comparison
| Metric | Top Pick An Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) | Op GPT-6 Astra (max) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $10.00/1M | $10.00/1M |
| Output Cost | $50.00/1M | $50.00/1M |
| Blended (3:1) | $20.00/1M | $20.00/1M |
| Specifications | ||
| Organization | Anthropic | OpenAI |
| Release Date | Sep 1, 2026 | Sep 3, 2026 |
| Performance & Speed | ||
| Throughput | 68.7 tok/s | — |
| TTFT | 111680ms | — |
| Latency | 111680ms | — |
| Composite Indices | ||
| Value Score | 100.0 | 94.4 |
| Reasoning Score | 64.8 | 61.2 |
| Intelligence | 64.8 | 61.2 |
| Coding | 80.7 | 76.9 |
Key Takeaways
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) offers the best value at $10.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) has the strongest reasoning profile with a 64.8 reasoning score,combining the available reasoning-heavy benchmarks.
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) reaches a 80.7 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 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
- Cost-sensitive applications
- High-volume processing
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
GPT-6 Astra (max)
- General-purpose AI
- Versatile applications
