Model comparison
GPT-5.3 Codex vs Llama2 70b Steerlm Chat
GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 31.2 on the Noometry Index.
Last verified . 0 shared benchmarks.
NVIDIASummary
- The widest gap is in coding, where GPT-5.3 Codex leads 48.5 to 29.3.
- Llama2 70b Steerlm Chat has downloadable open weights; the other is API-only.
Side by side
| GPT-5.3 Codex | Llama2 70b Steerlm Chat | |
|---|---|---|
| Provider | OpenAI | NVIDIA |
| Noometry Index | 45.5 | 31.2 |
| Released | 2026-02-05 | — |
| Weights | Proprietary | Open |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $1.75 | — |
| Output $ / M tokens | $14 | — |
| Results tracked | 8 | 9 |
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Category by category
Coding GPT-5.3 Codex leads
GPT-5.3 Codex: 48.5 (#51), Llama2 70b Steerlm Chat: 29.3 (#295)
| Benchmark | GPT-5.3 Codex | Llama2 70b Steerlm Chat |
|---|---|---|
| SWE-bench Verified | 74.8% | — |
| LMArena WebDev | 1408 | — |
| WeirdML | 79.3% | — |
| LMArena Coding | — | 1025 |
| ALE-Bench | 1,655 | — |
Agentic & Tool Use Not comparable
GPT-5.3 Codex: 47.8 (#9), Llama2 70b Steerlm Chat: —
| Benchmark | GPT-5.3 Codex | Llama2 70b Steerlm Chat |
|---|---|---|
| Terminal-Bench | 78.4% | — |
| METR Time Horizons | 74.5% | — |
| Vending-Bench 2 | 5,940 | — |
Reasoning Not comparable
GPT-5.3 Codex: —, Llama2 70b Steerlm Chat: 19.1 (#245)
| Benchmark | GPT-5.3 Codex | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Hard Prompts | — | 1047 |
| Epoch Capabilities Index | 156.84 | — |
Math Not comparable
GPT-5.3 Codex: —, Llama2 70b Steerlm Chat: 28.8 (#223)
| Benchmark | GPT-5.3 Codex | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Math | — | 1072 |
Multilingual Not comparable
GPT-5.3 Codex: —, Llama2 70b Steerlm Chat: 28.9 (#265)
| Benchmark | GPT-5.3 Codex | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Non-English | — | 1064 |
Instruction Following Not comparable
GPT-5.3 Codex: —, Llama2 70b Steerlm Chat: 54.5 (#274)
| Benchmark | GPT-5.3 Codex | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Instruction Following | — | 1061 |
Long Context Not comparable
GPT-5.3 Codex: —, Llama2 70b Steerlm Chat: 30.4 (#283)
| Benchmark | GPT-5.3 Codex | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Longer Query | — | 998 |
Writing & Preference Not comparable
GPT-5.3 Codex: —, Llama2 70b Steerlm Chat: 31.8 (#278)
| Benchmark | GPT-5.3 Codex | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Text | — | 1098 |
| LMArena Creative Writing | — | 1091 |
| LMArena Multi-Turn | — | 1058 |
Frequently asked questions
Is GPT-5.3 Codex better than Llama2 70b Steerlm Chat?
GPT-5.3 Codex is the stronger model overall, scoring 45.5 to 31.2 on the Noometry Index.
Is GPT-5.3 Codex or Llama2 70b Steerlm Chat better for coding?
GPT-5.3 Codex scores higher on coding benchmarks: 48.5 versus 29.3 in the Noometry coding category.
How many benchmarks do GPT-5.3 Codex and Llama2 70b Steerlm Chat share?
0 benchmarks have published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and Llama2 70b Steerlm Chat has 9.