Claude Fable 5.1 vs Grok 4.6: Specs & Benchmark Comparison
| Characteristic | Claude Fable 5.1 | Grok 4.6 |
|---|---|---|
| Company | Anthropic | xAI |
| Release Date | September 1, 2026 | August 12, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 500K |
| Context (output) | 128K | — |
| Input Price / 1M | $10.00 | $2.00 |
| Output Price / 1M | $50.00 | $6.00 |
| Average Score | 0.6 | 0.6 |
| Benchmarks | ||
| CursorBench v3.2 | 0.7 | 0.7 |
| GDPval-AA | 0.6 | 0.6 |
Visual Benchmark Comparison
Claude Fable 5.1
Grok 4.6
CursorBench v3.20.7 vs 0.7
0.7
0.7
GDPval-AA0.6 vs 0.6
0.6
0.6
Verdict
Claude Fable 5.1 leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Claude Fable 5.1 — 0.6, Grok 4.6 — 0.6.
API Cost
Grok 4.6 is 7.5x cheaper: input $2.00/1M vs $10.00/1M tokens.
Context Window
Claude Fable 5.1 supports a larger context: 1M vs 500K tokens.
Recency
Claude Fable 5.1 is newer: released 9/1/2026 vs 8/12/2026.
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Frequently Asked Questions
Which is better for coding — Claude Fable 5.1 or Grok 4.6?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Claude Fable 5.1 or Grok 4.6?
Grok 4.6 is cheaper for input: $2.00 per 1M tokens vs $10.00.
Which has a larger context window — Claude Fable 5.1 or Grok 4.6?
Claude Fable 5.1 supports a larger context: 1,048,576 tokens vs 500,000.
The Claude Fable 5.1 and Grok 4.6 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Fable 5.1 or Grok 4.6 page. See also the complete list of AI model comparisons.