# GPT-5 Pro vs Qwen3 8B

> GPT-5 Pro is the stronger model overall, scoring 46.2 to 33.3 on the Noometry Index. Qwen3 8B costs 133× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gpt-5-pro-vs-qwen3-8b
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. GPT-5 Pro scores higher in 4 categories and Qwen3 8B in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5 Pro leads 39.2 to 16.1.
- Qwen3 8B is cheaper at $0.18 / $0.70 per million input/output tokens, against $15 / $120 for GPT-5 Pro.
- GPT-5 Pro accepts more context: 400K tokens versus 131K.
- Qwen3 8B has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5 Pro | Qwen3 8B |
|---|---|---|
| Provider | OpenAI | Alibaba (Qwen) |
| Noometry Index | 46.2 | 33.3 |
| Rank | 58 | 237 |
| Context | 400K | 131K |
| Input $/M | $15 | $0.18 |
| Output $/M | $120 | $0.70 |
| Weights | Proprietary | Open |

## Coding

- GPT-5 Pro: 43.4 (#77)
- Qwen3 8B: 33.4 (#245)

| Benchmark | GPT-5 Pro | Qwen3 8B |
|---|---|---|
| SciCode | — | 22.6% |
| WeirdML | 60.4% | — |
| AlgoTune | 1.31 | — |

## Agentic & Tool Use

- GPT-5 Pro: —
- Qwen3 8B: 29.9 (#71)

| Benchmark | GPT-5 Pro | Qwen3 8B |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 42.6% |

## Reasoning

- GPT-5 Pro: 39.2 (#52)
- Qwen3 8B: 16.1 (#299)

| Benchmark | GPT-5 Pro | Qwen3 8B |
|---|---|---|
| Epoch Capabilities Index | 150.26 | 136.17 |
| ARC-AGI-2 | 18.3% | — |
| SimpleBench | 61.6% | — |
| Kagi LLM Benchmark | 76.8% | — |
| ARC-AGI-1 | 70.2% | — |
| CritPt | — | 0% |
| Chess Puzzles | — | 5% |
| EnigmaEval | 18.8% | — |
| DTBench | — | 59.7% |
| LMCA | — | 8.8% |

## Math

- GPT-5 Pro: 48.0 (#53)
- Qwen3 8B: 33.3 (#176)

| Benchmark | GPT-5 Pro | Qwen3 8B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 55.8% | — |
| FrontierMath Tier 4 | 19.5% | — |
| OTIS Mock AIME 2024-2025 | — | 56.1% |
| FrontierMath Tier 4 (v1) | 14.6% | — |

## Knowledge

- GPT-5 Pro: 56.2 (#39)
- Qwen3 8B: 36.1 (#164)

| Benchmark | GPT-5 Pro | Qwen3 8B |
|---|---|---|
| GPQA Diamond | — | 56.8% |
| Humanity's Last Exam | 31.6% | — |
| Vectara Hallucination Rate | — | 4.8% |

## Long Context

- GPT-5 Pro: —
- Qwen3 8B: 37.8 (#205)

| Benchmark | GPT-5 Pro | Qwen3 8B |
|---|---|---|
| Fiction.LiveBench | — | 62.1% |

## FAQ

### Is GPT-5 Pro better than Qwen3 8B?

GPT-5 Pro is the stronger model overall, scoring 46.2 to 33.3 on the Noometry Index. Qwen3 8B costs 133× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.

### Which is cheaper, GPT-5 Pro or Qwen3 8B?

Qwen3 8B is cheaper. It lists at $0.18 per million input tokens and $0.70 per million output tokens; GPT-5 Pro lists at $15 and $120.

### Is GPT-5 Pro or Qwen3 8B better for coding?

GPT-5 Pro scores higher on coding benchmarks: 43.4 versus 33.4 in the Noometry coding category.

### Which has the bigger context window?

GPT-5 Pro does, with 400K tokens against 131K.

### How many benchmarks do GPT-5 Pro and Qwen3 8B share?

1 benchmark has published results for both models. GPT-5 Pro has 12 scored results on Noometry and Qwen3 8B has 11.