# GPT-5.3 Chat vs Olmo 7b Instruct

> GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 30.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-3-chat-vs-olmo-7b-instruct
- Last updated: 2026-10-10
- Shared benchmarks: 10

## Summary

- They share 10 benchmarks with published results for both. GPT-5.3 Chat scores higher in 6 categories and Olmo 7b Instruct in 0 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.3 Chat leads 63.1 to 25.8.
- Olmo 7b Instruct has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.3 Chat | Olmo 7b Instruct |
|---|---|---|
| Provider | OpenAI | Allen Institute for AI (Ai2) |
| Noometry Index | 42.8 | 30.3 |
| Rank | 109 | 295 |
| Context | 128K | — |
| Input $/M | $1.75 | — |
| Output $/M | $14 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5.3 Chat: 41.4 (#124)
- Olmo 7b Instruct: 29.6 (#303)

| Benchmark | GPT-5.3 Chat | Olmo 7b Instruct |
|---|---|---|
| LMArena Coding | 1408 | 1016 |

## Reasoning

- GPT-5.3 Chat: 28.5 (#102)
- Olmo 7b Instruct: 18.8 (#274)

| Benchmark | GPT-5.3 Chat | Olmo 7b Instruct |
|---|---|---|
| LMArena Hard Prompts | 1399 | 993 |

## Math

- GPT-5.3 Chat: 38.2 (#142)
- Olmo 7b Instruct: 30.2 (#237)

| Benchmark | GPT-5.3 Chat | Olmo 7b Instruct |
|---|---|---|
| LMArena Math | 1389 | 1018 |

## Knowledge

- GPT-5.3 Chat: 38.8 (#140)
- Olmo 7b Instruct: —

| Benchmark | GPT-5.3 Chat | Olmo 7b Instruct |
|---|---|---|
| LMArena Expert | 1397 | — |

## Multilingual

- GPT-5.3 Chat: 50.3 (#124)
- Olmo 7b Instruct: 24.0 (#291)

| Benchmark | GPT-5.3 Chat | Olmo 7b Instruct |
|---|---|---|
| LMArena Non-English | 1382 | 977 |
| LMArena Chinese | 1432 | 1014 |
| LMArena Russian | 1400 | 947 |
| LMArena French | 1397 | — |
| LMArena German | 1384 | — |
| LMArena Japanese | 1352 | — |
| LMArena Korean | 1346 | — |
| LMArena Spanish | 1371 | — |

## Instruction Following

- GPT-5.3 Chat: 72.8 (#129)
- Olmo 7b Instruct: 49.0 (#301)

| Benchmark | GPT-5.3 Chat | Olmo 7b Instruct |
|---|---|---|
| LMArena Instruction Following | 1378 | 978 |

## Long Context

- GPT-5.3 Chat: 42.6 (#120)
- Olmo 7b Instruct: —

| Benchmark | GPT-5.3 Chat | Olmo 7b Instruct |
|---|---|---|
| LMArena Longer Query | 1396 | — |

## Writing & Preference

- GPT-5.3 Chat: 63.1 (#68)
- Olmo 7b Instruct: 25.8 (#303)

| Benchmark | GPT-5.3 Chat | Olmo 7b Instruct |
|---|---|---|
| LMArena Text | 1389 | 1032 |
| LMArena Creative Writing | 1355 | 990 |
| LMArena Multi-Turn | 1412 | 1007 |
| EQ-Bench Creative Writing | 1690 | — |

## FAQ

### Is GPT-5.3 Chat better than Olmo 7b Instruct?

GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 30.3 on the Noometry Index.

### Is GPT-5.3 Chat or Olmo 7b Instruct better for coding?

GPT-5.3 Chat scores higher on coding benchmarks: 41.4 versus 29.6 in the Noometry coding category.

### How many benchmarks do GPT-5.3 Chat and Olmo 7b Instruct share?

10 benchmarks have published results for both models. GPT-5.3 Chat has 18 scored results on Noometry and Olmo 7b Instruct has 10.