# Codellama 70b Instruct vs GPT-5.1-Codex

> GPT-5.1-Codex is the stronger model overall, scoring 38.2 to 33.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/codellama-70b-instruct-vs-gpt-5-1-codex
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in coding, where GPT-5.1-Codex leads 41.7 to 37.0.
- Codellama 70b Instruct has downloadable open weights; the other is API-only.

## Snapshot

| | Codellama 70b Instruct | GPT-5.1-Codex |
|---|---|---|
| Provider | Meta | OpenAI |
| Noometry Index | 33.3 | 38.2 |
| Rank | 236 | 178 |
| Context | — | 400K |
| Input $/M | — | $1.25 |
| Output $/M | — | $10 |
| Weights | Open | Proprietary |

## Coding

- Codellama 70b Instruct: 37.0 (#189)
- GPT-5.1-Codex: 41.7 (#107)

| Benchmark | Codellama 70b Instruct | GPT-5.1-Codex |
|---|---|---|
| SWE-bench Verified (bash only) | — | 66% |
| LMArena WebDev | — | 1337 |
| BigCodeBench Instruct | 40.7% | — |
| BigCodeBench Complete | 49.6% | — |
| ALE-Bench | — | 1,245 |
| HumanEval+ | 65.9% | — |

## Agentic & Tool Use

- Codellama 70b Instruct: —
- GPT-5.1-Codex: 37.8 (#32)

| Benchmark | Codellama 70b Instruct | GPT-5.1-Codex |
|---|---|---|
| Terminal-Bench | — | 60.4% |
| METR Time Horizons | — | 70.8% |

## Reasoning

- Codellama 70b Instruct: 19.2 (#241)
- GPT-5.1-Codex: —

| Benchmark | Codellama 70b Instruct | GPT-5.1-Codex |
|---|---|---|
| LMArena Hard Prompts | 1052 | — |

## Math

- Codellama 70b Instruct: —
- GPT-5.1-Codex: 29.3 (#218)

| Benchmark | Codellama 70b Instruct | GPT-5.1-Codex |
|---|---|---|
| ProofBench | — | 9% |

## Multilingual

- Codellama 70b Instruct: 24.9 (#283)
- GPT-5.1-Codex: —

| Benchmark | Codellama 70b Instruct | GPT-5.1-Codex |
|---|---|---|
| LMArena Non-English | 992 | — |

## Instruction Following

- Codellama 70b Instruct: 52.1 (#288)
- GPT-5.1-Codex: —

| Benchmark | Codellama 70b Instruct | GPT-5.1-Codex |
|---|---|---|
| LMArena Instruction Following | 1024 | — |

## Writing & Preference

- Codellama 70b Instruct: 33.6 (#272)
- GPT-5.1-Codex: —

| Benchmark | Codellama 70b Instruct | GPT-5.1-Codex |
|---|---|---|
| LMArena Text | 1057 | — |

## FAQ

### Is Codellama 70b Instruct better than GPT-5.1-Codex?

GPT-5.1-Codex is the stronger model overall, scoring 38.2 to 33.3 on the Noometry Index.

### Is Codellama 70b Instruct or GPT-5.1-Codex better for coding?

GPT-5.1-Codex scores higher on coding benchmarks: 41.7 versus 37.0 in the Noometry coding category.

### How many benchmarks do Codellama 70b Instruct and GPT-5.1-Codex share?

0 benchmarks have published results for both models. Codellama 70b Instruct has 7 scored results on Noometry and GPT-5.1-Codex has 6.