GLM-5.3 vs Nemotron 3 Ultra (550B A55B): Specs & Benchmark Comparison
GLM-5.3 is developed by Zhipu AI, while Nemotron 3 Ultra (550B A55B) comes from NVIDIA. Nemotron 3 Ultra (550B A55B) was released in June 2026, and GLM-5.3 followed 2 months later in August 2026. The two are similar in size, at about 753 billion and 550 billion parameters respectively.
The two models share 2 published benchmarks. GLM-5.3 leads on 2 of them. The widest gaps are on Terminal-Bench 2.1, where GLM-5.3 scores 88.0% against 56.4%; Humanity's Last Exam, where GLM-5.3 scores 62.5% against 37.4%. Averaged across everything we track, GLM-5.3 sits at 52.2% and Nemotron 3 Ultra (550B A55B) at 64.8%.
GLM-5.3 is available through an API at $1.40 per million input tokens with a 1M-token context window. We do not track a hosted API for Nemotron 3 Ultra (550B A55B), so pricing and context cannot be compared directly.
| Characteristic | GLM-5.3 | Nemotron 3 Ultra (550B A55B) |
|---|---|---|
| Company | Zhipu AI | NVIDIA |
| Release Date | August 14, 2026 | June 4, 2026 |
| Parameters | 753B | 550B |
| Multimodal | No | No |
| Context (input) | 1.0M | — |
| Context (output) | 131K | — |
| Input Price / 1M | $1.40 | — |
| Output Price / 1M | $4.40 | — |
| Average Score | 52.2% | 64.8% |
| Benchmarks | ||
| Terminal-Bench 2.1 | 88.0% | 56.4% |
| Humanity's Last Exam | 62.5% | 37.4% |
Visual Benchmark Comparison
Verdict
GLM-5.3 leads in 1 out of 2 comparison categories.
Both models show comparable average scores: GLM-5.3 — 0.5, Nemotron 3 Ultra (550B A55B) — 0.6.
GLM-5.3 is newer: released 8/14/2026 vs 6/4/2026.
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Frequently Asked Questions
Which is better for coding — GLM-5.3 or Nemotron 3 Ultra (550B A55B)?
Which model is cheaper — GLM-5.3 or Nemotron 3 Ultra (550B A55B)?
Which has a larger context window — GLM-5.3 or Nemotron 3 Ultra (550B A55B)?
The GLM-5.3 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 GLM-5.3 or Nemotron 3 Ultra (550B A55B) page. See also the complete list of AI model comparisons.