Claude Fable 5 vs Claude Sonnet 5: Specs & Benchmark Comparison
| Characteristic | Claude Fable 5 | Claude Sonnet 5 |
|---|---|---|
| Company | Anthropic | Anthropic |
| Release Date | June 9, 2026 | June 30, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 128K | 64K |
| Input Price / 1M | $10.00 | $2.00 |
| Output Price / 1M | $50.00 | $10.00 |
| Average Score | 0.6 | 0.6 |
| Benchmarks | ||
| GDP.pdf | 0.3 | 0.8 |
| SWE-Bench Pro | 0.8 | 0.6 |
| DeepSWE 1.1 | 0.7 | 0.5 |
| FrontierCode 1.1 | 0.5 | 0.4 |
| SWE-Bench Verified | 0.9 | 0.9 |
| HealthBench Professional | 0.7 | 0.6 |
| FrontierCode | 0.5 | 0.4 |
| Legal Agent Benchmark | 0.1 | 0.1 |
| Humanity's Last Exam | 0.6 | 0.6 |
| AutomationBench | 0.2 | 0.1 |
| OSWorld-Verified | 0.8 | 0.8 |
Visual Benchmark Comparison
Claude Fable 5
Claude Sonnet 5
GDP.pdf0.3 vs 0.8
0.3
0.8
SWE-Bench Pro0.8 vs 0.6
0.8
0.6
DeepSWE 1.10.7 vs 0.5
0.7
0.5
FrontierCode 1.10.5 vs 0.4
0.5
0.4
SWE-Bench Verified0.9 vs 0.9
0.9
0.9
HealthBench Professional0.7 vs 0.6
0.7
0.6
FrontierCode0.5 vs 0.4
0.5
0.4
Legal Agent Benchmark0.1 vs 0.1
0.1
0.1
Humanity's Last Exam0.6 vs 0.6
0.6
0.6
AutomationBench0.2 vs 0.1
0.2
0.1
OSWorld-Verified0.8 vs 0.8
0.8
0.8
Verdict
Claude Sonnet 5 leads in 2 out of 5 comparison categories.
Overall Performance
Both models show comparable average scores: Claude Fable 5 — 0.6, Claude Sonnet 5 — 0.6.
Programming
On SWE-Bench, both models are nearly equal: Claude Fable 5 — 0.9, Claude Sonnet 5 — 0.9.
API Cost
Claude Sonnet 5 is 5.0x cheaper: input $2.00/1M vs $10.00/1M tokens.
Context Window
Same context size: 1M tokens.
Recency
Claude Sonnet 5 is newer: released 6/30/2026 vs 6/9/2026.
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Frequently Asked Questions
Which is better for coding — Claude Fable 5 or Claude Sonnet 5?
On the SWE-Bench benchmark, Claude Fable 5 shows a better result: 0.9 vs 0.9.
Which model is cheaper — Claude Fable 5 or Claude Sonnet 5?
Claude Sonnet 5 is cheaper for input: $2.00 per 1M tokens vs $10.00.
Which has a larger context window — Claude Fable 5 or Claude Sonnet 5?
Claude Fable 5 supports a larger context: 1,000,000 tokens vs 1,000,000.
The Claude Fable 5 and Claude Sonnet 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 Claude Sonnet 5 page. See also the complete list of AI model comparisons.