Claude Fable 5 vs Nemotron 3 Ultra (550B A55B): Specs & Benchmark Comparison
| Characteristic | Claude Fable 5 | Nemotron 3 Ultra (550B A55B) |
|---|---|---|
| Company | Anthropic | NVIDIA |
| Release Date | June 9, 2026 | June 4, 2026 |
| Parameters | — | 550B |
| Multimodal | Yes | No |
| Context (input) | 1.0M | — |
| Context (output) | 128K | — |
| Input Price / 1M | $10.00 | — |
| Output Price / 1M | $50.00 | — |
| Average Score | 0.6 | 0.6 |
| Benchmarks | ||
| Terminal-Bench 2.1 | 0.8 | 0.6 |
| Humanity's Last Exam | 0.6 | 0.4 |
| SWE-Bench Verified | 0.9 | 0.7 |
| Finance Agent v2 | 0.6 | 0.4 |
Visual Benchmark Comparison
Claude Fable 5
Nemotron 3 Ultra (550B A55B)
Terminal-Bench 2.10.8 vs 0.6
0.8
0.6
Humanity's Last Exam0.6 vs 0.4
0.6
0.4
SWE-Bench Verified0.9 vs 0.7
0.9
0.7
Finance Agent v20.6 vs 0.4
0.6
0.4
Verdict
Both models show equal results — the choice depends on your specific use case.
Overall Performance
Both models show comparable average scores: Claude Fable 5 — 0.6, Nemotron 3 Ultra (550B A55B) — 0.6.
Programming
On SWE-Bench, both models are nearly equal: Claude Fable 5 — 0.9, Nemotron 3 Ultra (550B A55B) — 0.7.
Recency
Both models were released around the same time: 6/9/2026 and 6/4/2026.
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Frequently Asked Questions
Which is better for coding — Claude Fable 5 or Nemotron 3 Ultra (550B A55B)?
On the SWE-Bench benchmark, Claude Fable 5 shows a better result: 0.9 vs 0.7.
Which model is cheaper — Claude Fable 5 or Nemotron 3 Ultra (550B A55B)?
API pricing data is available on the individual model pages.
Which has a larger context window — Claude Fable 5 or Nemotron 3 Ultra (550B A55B)?
Context window data is available on the individual model pages.
The Claude Fable 5 and Nemotron 3 Ultra (550B A55B) 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 Nemotron 3 Ultra (550B A55B) page. See also the complete list of AI model comparisons.