+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
GPT-5.3 Codex vs Llama-3.3 Nemotron Super 49B
Comprehensive side-by-side LLM comparison
. Both models have their strengths depending on your specific coding needs.
+
+
+
+
OpenAI
GPT-5.3 Codex, released by OpenAI in February 2026, is a coding-specialized large language model from the GPT-5.3 family. It targets software engineering workflows including automated code generation, test writing, and agentic multi-file editing, built on the incremental improvements of the GPT-5.3 generation.
+
+
+
+
NVIDIA
Llama-3.3-Nemotron-Super-49B-v1 is a 49-billion-parameter model from NVIDIA, fine-tuned from Meta's Llama 3.3 using NVIDIA's Nemotron post-training pipeline that combines supervised fine-tuning with reinforcement learning to enhance reasoning, instruction alignment, and complex problem-solving. The Super tier in the Nemotron family represents a mid-range capability level — positioned above the Nano series and below the Ultra 253B flagship — offering a balance between high-quality outputs and manageable inference infrastructure requirements. Released open-weight on HuggingFace with NVIDIA NIM support, it targets teams with multi-GPU setups who need strong reasoning capability without the scale of the Ultra model.
11 months newer
Llama-3.3 Nemotron Super 49B
NVIDIA
2025-03-01
GPT-5.3 Codex
OpenAI
2026-02
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
GPT-5.3 Codex
0 providers
+
+
+
+
Llama-3.3 Nemotron Super 49B
0 providers
+
+
+
+
GPT-5.3 Codex
Avg Score:0.0%
Providers:0
+
+
+
+
Llama-3.3 Nemotron Super 49B
Avg Score:0.0%
Providers:0