# 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.

- Canonical page: https://noometry.com/compare/gpt-5-3-codex-vs-llama2-70b-steerlm-chat
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- 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.

## Snapshot

| | GPT-5.3 Codex | Llama2 70b Steerlm Chat |
|---|---|---|
| Provider | OpenAI | NVIDIA |
| Noometry Index | 45.5 | 31.2 |
| Rank | 61 | 265 |
| Context | 400K | — |
| Input $/M | $1.75 | — |
| Output $/M | $14 | — |
| Weights | Proprietary | Open |

## Coding

- 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

- 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

- 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

- GPT-5.3 Codex: —
- Llama2 70b Steerlm Chat: 28.8 (#223)

| Benchmark | GPT-5.3 Codex | Llama2 70b Steerlm Chat |
|---|---|---|
| LMArena Math | — | 1072 |

## Multilingual

- 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

- 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

- 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

- 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 |

## FAQ

### 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.