# GPT-5.4 Pro vs Sonar Reasoning Pro

> GPT-5.4 Pro has enough public results to be ranked (#18); Sonar Reasoning Pro does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/gpt-5-4-pro-vs-sonar-reasoning-pro
- Last updated: 2026-10-12
- Shared benchmarks: 0

## Summary

- Sonar Reasoning Pro is cheaper at $2 / $8 per million input/output tokens, against $30 / $180 for GPT-5.4 Pro.
- GPT-5.4 Pro accepts more context: 1.05M tokens versus 128K.

## Snapshot

| | GPT-5.4 Pro | Sonar Reasoning Pro |
|---|---|---|
| Provider | OpenAI | Perplexity |
| Noometry Index | 58.9 | — |
| Rank | 18 | — |
| Context | 1.05M | 128K |
| Input $/M | $30 | $2 |
| Output $/M | $180 | $8 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5.4 Pro: 43.2 (#90)
- Sonar Reasoning Pro: —

| Benchmark | GPT-5.4 Pro | Sonar Reasoning Pro |
|---|---|---|
| WeirdML | 57.4% | — |

## Agentic & Tool Use

- GPT-5.4 Pro: —
- Sonar Reasoning Pro: —

| Benchmark | GPT-5.4 Pro | Sonar Reasoning Pro |
|---|---|---|
| LMArena Search | — | 1139 |

## Reasoning

- GPT-5.4 Pro: 70.7 (#13)
- Sonar Reasoning Pro: —

| Benchmark | GPT-5.4 Pro | Sonar Reasoning Pro |
|---|---|---|
| ARC-AGI-2 | 83.3% | — |
| SimpleBench | 74.1% | — |
| ARC-AGI-1 | 94.5% | — |
| CritPt | 30% | — |
| Chess Puzzles | 58.6% | — |
| EnigmaEval | 23.8% | — |
| Epoch Capabilities Index | 158.93 | — |

## Math

- GPT-5.4 Pro: 72.4 (#22)
- Sonar Reasoning Pro: —

| Benchmark | GPT-5.4 Pro | Sonar Reasoning Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 82.5% | — |
| FrontierMath Tier 4 | 58.5% | — |
| FrontierMath (Feb 2025 set) | 50% | — |
| FrontierMath Tier 4 (v1) | 37.5% | — |

## Knowledge

- GPT-5.4 Pro: 68.3 (#7)
- Sonar Reasoning Pro: —

| Benchmark | GPT-5.4 Pro | Sonar Reasoning Pro |
|---|---|---|
| GPQA Diamond | 94.6% | — |
| Humanity's Last Exam | 44.3% | — |
| SimpleQA Verified | 46.3% | — |
| Vectara Hallucination Rate | 8.3% | — |

## FAQ

### Is GPT-5.4 Pro better than Sonar Reasoning Pro?

GPT-5.4 Pro has enough public results to be ranked (#18); Sonar Reasoning Pro does not yet, so treat this comparison as directional.

### Which is cheaper, GPT-5.4 Pro or Sonar Reasoning Pro?

Sonar Reasoning Pro is cheaper. It lists at $2 per million input tokens and $8 per million output tokens; GPT-5.4 Pro lists at $30 and $180.

### Which has the bigger context window?

GPT-5.4 Pro does, with 1.05M tokens against 128K.

### How many benchmarks do GPT-5.4 Pro and Sonar Reasoning Pro share?

0 benchmarks have published results for both models. GPT-5.4 Pro has 16 scored results on Noometry and Sonar Reasoning Pro has 1.