# GPT-5 Pro vs Granite 3.1 8b Instruct

> GPT-5 Pro is the stronger model overall, scoring 46.2 to 31.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-pro-vs-granite-3-1-8b-instruct
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in knowledge, where GPT-5 Pro leads 56.2 to 30.6.
- Granite 3.1 8b Instruct has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5 Pro | Granite 3.1 8b Instruct |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 46.2 | 31.8 |
| Rank | 58 | 256 |
| Context | 400K | — |
| Input $/M | $15 | — |
| Output $/M | $120 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5 Pro: 43.4 (#77)
- Granite 3.1 8b Instruct: 33.9 (#232)

| Benchmark | GPT-5 Pro | Granite 3.1 8b Instruct |
|---|---|---|
| WeirdML | 60.4% | — |
| LMArena Coding | — | 1186 |
| AlgoTune | 1.31 | — |

## Agentic & Tool Use

- GPT-5 Pro: —
- Granite 3.1 8b Instruct: 23.9 (#113)

| Benchmark | GPT-5 Pro | Granite 3.1 8b Instruct |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 27.1% |

## Reasoning

- GPT-5 Pro: 39.2 (#52)
- Granite 3.1 8b Instruct: 21.2 (#204)

| Benchmark | GPT-5 Pro | Granite 3.1 8b Instruct |
|---|---|---|
| ARC-AGI-2 | 18.3% | — |
| SimpleBench | 61.6% | — |
| Kagi LLM Benchmark | 76.8% | — |
| ARC-AGI-1 | 70.2% | — |
| EnigmaEval | 18.8% | — |
| LMArena Hard Prompts | — | 1146 |
| Epoch Capabilities Index | 150.26 | — |

## Math

- GPT-5 Pro: 48.0 (#53)
- Granite 3.1 8b Instruct: 30.4 (#210)

| Benchmark | GPT-5 Pro | Granite 3.1 8b Instruct |
|---|---|---|
| FrontierMath (Tiers 1-3) | 55.8% | — |
| FrontierMath Tier 4 | 19.5% | — |
| LMArena Math | — | 1152 |
| FrontierMath Tier 4 (v1) | 14.6% | — |

## Knowledge

- GPT-5 Pro: 56.2 (#39)
- Granite 3.1 8b Instruct: 30.6 (#218)

| Benchmark | GPT-5 Pro | Granite 3.1 8b Instruct |
|---|---|---|
| Humanity's Last Exam | 31.6% | — |
| LMArena Expert | — | 1142 |

## Multilingual

- GPT-5 Pro: —
- Granite 3.1 8b Instruct: 31.1 (#255)

| Benchmark | GPT-5 Pro | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Non-English | — | 1099 |
| LMArena Chinese | — | 1145 |
| LMArena Russian | — | 1092 |

## Instruction Following

- GPT-5 Pro: —
- Granite 3.1 8b Instruct: 58.9 (#254)

| Benchmark | GPT-5 Pro | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Instruction Following | — | 1131 |

## Long Context

- GPT-5 Pro: —
- Granite 3.1 8b Instruct: 35.2 (#236)

| Benchmark | GPT-5 Pro | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Longer Query | — | 1162 |

## Writing & Preference

- GPT-5 Pro: —
- Granite 3.1 8b Instruct: 35.7 (#261)

| Benchmark | GPT-5 Pro | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Text | — | 1150 |
| LMArena Creative Writing | — | 1129 |
| LMArena Multi-Turn | — | 1108 |

## FAQ

### Is GPT-5 Pro better than Granite 3.1 8b Instruct?

GPT-5 Pro is the stronger model overall, scoring 46.2 to 31.8 on the Noometry Index.

### Is GPT-5 Pro or Granite 3.1 8b Instruct better for coding?

GPT-5 Pro scores higher on coding benchmarks: 43.4 versus 33.9 in the Noometry coding category.

### How many benchmarks do GPT-5 Pro and Granite 3.1 8b Instruct share?

0 benchmarks have published results for both models. GPT-5 Pro has 12 scored results on Noometry and Granite 3.1 8b Instruct has 13.