Claude Fable 5 vs Grok 4.5: Specs & Benchmark Comparison
| Characteristic | Claude Fable 5 | Grok 4.5 |
|---|---|---|
| Company | Anthropic | xAI |
| Release Date | June 9, 2026 | July 16, 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 | 0.8 |
| Benchmarks | ||
| SWE-Bench Pro | 0.8 | 0.7 |
| Terminal-Bench 2.1 | 0.8 | 0.8 |
Visual Benchmark Comparison
Claude Fable 5
Grok 4.5
SWE-Bench Pro0.8 vs 0.7
0.8
0.7
Terminal-Bench 2.10.8 vs 0.8
0.8
0.8
Verdict
Grok 4.5 leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Claude Fable 5 — 0.6, Grok 4.5 — 0.8.
API Cost
Grok 4.5 is 7.5x cheaper: input $2.00/1M vs $10.00/1M tokens.
Context Window
Claude Fable 5 supports a larger context: 1M vs 500K tokens.
Recency
Grok 4.5 is newer: released 7/16/2026 vs 6/9/2026.
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Frequently Asked Questions
Which is better for coding — Claude Fable 5 or Grok 4.5?
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 or Grok 4.5?
Grok 4.5 is cheaper for input: $2.00 per 1M tokens vs $10.00.
Which has a larger context window — Claude Fable 5 or Grok 4.5?
Claude Fable 5 supports a larger context: 1,000,000 tokens vs 500,000.
The Claude Fable 5 and Grok 4.5 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 or Grok 4.5 page. See also the complete list of AI model comparisons.