Model Comparison
Tri-21B-think Preview
vs. Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
Comparing 2 AI models · 0 benchmarks · Trillion Labs, Anthropic
Recommended Pick
AnClaude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)2 metric winsStrongest on: Reasoning, Intelligence
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
Reasoning gap
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) leads Tri-21B-think Preview by 51.2 points on reasoning.
Top-pick rationale
Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) wins 2 measurable categories, including Reasoning, Intelligence.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Tri-21B-think Preview
Trillion Labs
TTFT
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Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
Anthropic
TTFT
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Which answer was more useful?
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OpenAI-compatible inference
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Full Comparison
| Metric | Tr Tri-21B-think Preview | Top Pick An Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | — | $10.00/1M |
| Output Cost | — | $50.00/1M |
| Blended (3:1) | — | $20.00/1M |
| Specifications | ||
| Organization | Trillion Labs | Anthropic |
| Release Date | Feb 10, 2026 | Sep 1, 2026 |
| Performance & Speed | ||
| Throughput | — | 68.7 tok/s |
| TTFT | — | 111680ms |
| Latency | — | 111680ms |
| Composite Indices | ||
| Value Score | — | 100.0 |
| Reasoning Score | 13.6 | 64.8 |
| Intelligence | 13.6 | 64.8 |
| Coding | — | 80.7 |
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
Tri-21B-think Preview
- General-purpose AI
- Versatile applications
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
