Nemotron 3 SupervsGPT-5.3-Codex-Spark
Nemotron 3 Super | GPT-5.3-Codex-Spark | |
|---|---|---|
| Specifications | ||
ParametersA rough measure of how big the model is. More parameters usually means more capable and more expensive to run, though it is a poor guide on its own — a smaller, newer model often beats a larger, older one. | 120B | — |
Context windowHow much text the model can hold in mind at once — your question, any documents you attach, the conversation so far, and its own reply. Go past it and the earliest part falls out of view. | 1M | 128k |
| BenchmarksPublished by one model only | ||
SWE-Bench VerifiedCoding — Real coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 60.5% | — |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 79.2% | — |
AA Intelligence IndexOverall intelligence — Artificial Analysis composite intelligence index across evals | 36 | — |
| Overview | ||
| Company | NVIDIA | OpenAI |
| Release date | Mar 11 2026 | Feb 12 2026 |
| Access | Open Source | Proprietary |
Other comparisons
Frequently asked questions
Nemotron 3 Super and GPT-5.3-Codex-Spark don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-5.3-Codex-Spark shipped 27 days before Nemotron 3 Super, so benchmark comparisons should account for the intervening progress.
Context windows are 1M (Nemotron 3 Super) vs 128k (GPT-5.3-Codex-Spark). Nemotron 3 Super is open source, while GPT-5.3-Codex-Spark is proprietary.
Direct benchmark comparisons are unavailable — Nemotron 3 Super and GPT-5.3-Codex-Spark don't publish scores on any of the same benchmarks.
Nemotron 3 Super was released by NVIDIA on Mar 11 2026.
GPT-5.3-Codex-Spark was released by OpenAI on Feb 12 2026.
Nemotron 3 Super has a 1M context window; GPT-5.3-Codex-Spark has 128k.
Nemotron 3 Super is an open source model released by NVIDIA. GPT-5.3-Codex-Spark is a proprietary model released by OpenAI.