Claude Fable 5 vs Claude Opus 5: Specs & Benchmark Comparison
| Characteristic | Claude Fable 5 | Claude Opus 5 |
|---|---|---|
| Company | Anthropic | Anthropic |
| Release Date | June 9, 2026 | July 24, 2026 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 1.0M |
| Context (output) | 128K | 128K |
| Input Price / 1M | $10.00 | $5.00 |
| Output Price / 1M | $50.00 | $25.00 |
| Average Score | 0.6 | 0.6 |
| Benchmarks | ||
| BioMysteryBench | 0.5 | 0.9 |
| AutomationBench | 0.2 | 0.3 |
| FrontierCode | 0.5 | 0.5 |
| HealthBench Professional | 0.7 | 0.6 |
| Legal Agent Benchmark | 0.1 | 0.1 |
| DeepSWE 1.1 | 0.7 | 0.7 |
| Humanity's Last Exam | 0.6 | 0.6 |
| FrontierCode 1.1 | 0.5 | 0.5 |
Visual Benchmark Comparison
Claude Fable 5
Claude Opus 5
BioMysteryBench0.5 vs 0.9
0.5
0.9
AutomationBench0.2 vs 0.3
0.2
0.3
FrontierCode0.5 vs 0.5
0.5
0.5
HealthBench Professional0.7 vs 0.6
0.7
0.6
Legal Agent Benchmark0.1 vs 0.1
0.1
0.1
DeepSWE 1.10.7 vs 0.7
0.7
0.7
Humanity's Last Exam0.6 vs 0.6
0.6
0.6
FrontierCode 1.10.5 vs 0.5
0.5
0.5
Verdict
Claude Opus 5 leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: Claude Fable 5 — 0.6, Claude Opus 5 — 0.6.
API Cost
Claude Opus 5 is 2.0x cheaper: input $5.00/1M vs $10.00/1M tokens.
Context Window
Same context size: 1M tokens.
Recency
Claude Opus 5 is newer: released 7/24/2026 vs 6/9/2026.
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Frequently Asked Questions
Which is better for coding — Claude Fable 5 or Claude Opus 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 Claude Opus 5?
Claude Opus 5 is cheaper for input: $5.00 per 1M tokens vs $10.00.
Which has a larger context window — Claude Fable 5 or Claude Opus 5?
Claude Fable 5 supports a larger context: 1,000,000 tokens vs 1,000,000.
The Claude Fable 5 and Claude Opus 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 Opus 5 page. See also the complete list of AI model comparisons.