Model comparison
GPT-5.2 Codex vs Llama 3.1 Nemotron 51b Instruct
GPT-5.2 Codex is the stronger model overall, scoring 42.6 to 35.9 on the Noometry Index.
Last verified . 0 shared benchmarks.
NVIDIASummary
- The widest gap is in coding, where GPT-5.2 Codex leads 45.5 to 35.6.
- Llama 3.1 Nemotron 51b Instruct has downloadable open weights; the other is API-only.
Side by side
| GPT-5.2 Codex | Llama 3.1 Nemotron 51b Instruct | |
|---|---|---|
| Provider | OpenAI | NVIDIA |
| Noometry Index | 42.6 | 35.9 |
| Released | 2025-12-18 | — |
| Weights | Proprietary | Open |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $1.75 | — |
| Output $ / M tokens | $14 | — |
| Results tracked | 5 | 12 |
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Category by category
Coding GPT-5.2 Codex leads
GPT-5.2 Codex: 45.5 (#71), Llama 3.1 Nemotron 51b Instruct: 35.6 (#222)
| Benchmark | GPT-5.2 Codex | Llama 3.1 Nemotron 51b Instruct |
|---|---|---|
| SWE-bench Verified (bash only) | 72.8% | — |
| LMArena WebDev | 1339 | — |
| SWE-bench Multilingual | 66.3% | — |
| LMArena Coding | — | 1223 |
| ALE-Bench | 1,300 | — |
Agentic & Tool Use Not comparable
GPT-5.2 Codex: 41.0 (#22), Llama 3.1 Nemotron 51b Instruct: —
| Benchmark | GPT-5.2 Codex | Llama 3.1 Nemotron 51b Instruct |
|---|---|---|
| Terminal-Bench | 66.5% | — |
Reasoning Not comparable
GPT-5.2 Codex: —, Llama 3.1 Nemotron 51b Instruct: 23.5 (#177)
| Benchmark | GPT-5.2 Codex | Llama 3.1 Nemotron 51b Instruct |
|---|---|---|
| LMArena Hard Prompts | — | 1203 |
Math Not comparable
GPT-5.2 Codex: —, Llama 3.1 Nemotron 51b Instruct: 34.6 (#193)
| Benchmark | GPT-5.2 Codex | Llama 3.1 Nemotron 51b Instruct |
|---|---|---|
| LMArena Math | — | 1230 |
Knowledge Not comparable
GPT-5.2 Codex: —, Llama 3.1 Nemotron 51b Instruct: 31.9 (#218)
| Benchmark | GPT-5.2 Codex | Llama 3.1 Nemotron 51b Instruct |
|---|---|---|
| LMArena Expert | — | 1167 |
Multilingual Not comparable
GPT-5.2 Codex: —, Llama 3.1 Nemotron 51b Instruct: 36.1 (#241)
| Benchmark | GPT-5.2 Codex | Llama 3.1 Nemotron 51b Instruct |
|---|---|---|
| LMArena Non-English | — | 1181 |
| LMArena Chinese | — | 1180 |
| LMArena Russian | — | 1187 |
Instruction Following Not comparable
GPT-5.2 Codex: —, Llama 3.1 Nemotron 51b Instruct: 62.9 (#233)
| Benchmark | GPT-5.2 Codex | Llama 3.1 Nemotron 51b Instruct |
|---|---|---|
| LMArena Instruction Following | — | 1201 |
Long Context Not comparable
GPT-5.2 Codex: —, Llama 3.1 Nemotron 51b Instruct: 36.5 (#230)
| Benchmark | GPT-5.2 Codex | Llama 3.1 Nemotron 51b Instruct |
|---|---|---|
| LMArena Longer Query | — | 1205 |
Writing & Preference Not comparable
GPT-5.2 Codex: —, Llama 3.1 Nemotron 51b Instruct: 43.4 (#229)
| Benchmark | GPT-5.2 Codex | Llama 3.1 Nemotron 51b Instruct |
|---|---|---|
| LMArena Text | — | 1228 |
| LMArena Creative Writing | — | 1213 |
| LMArena Multi-Turn | — | 1227 |
Frequently asked questions
Is GPT-5.2 Codex better than Llama 3.1 Nemotron 51b Instruct?
GPT-5.2 Codex is the stronger model overall, scoring 42.6 to 35.9 on the Noometry Index.
Is GPT-5.2 Codex or Llama 3.1 Nemotron 51b Instruct better for coding?
GPT-5.2 Codex scores higher on coding benchmarks: 45.5 versus 35.6 in the Noometry coding category.
How many benchmarks do GPT-5.2 Codex and Llama 3.1 Nemotron 51b Instruct share?
0 benchmarks have published results for both models. GPT-5.2 Codex has 5 scored results on Noometry and Llama 3.1 Nemotron 51b Instruct has 12.