# GPT-OSS 120B vs Phi-4-reasoning

> Side-by-side benchmark comparison for GPT-OSS 120B and Phi-4-reasoning across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-oss-120b-vs-phi-4-reasoning
- Last updated: October 14, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: GPT-OSS 120B and Phi-4-reasoning share only 3 sourced benchmark rows.

## Summary

- Only 3 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- GPT-OSS 120B has the larger published context window at 128K.

## Model Snapshot

| Property | GPT-OSS 120B | Phi-4-reasoning |
|----------|----------|----------|
| Creator | OpenAI | Microsoft |
| Type | Open Weight | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 32K |
| Independent public score (not head-to-head) | 36.86 | null |
| Benchmarks Covered | 8 | 6 |
| Pricing (input/output) | $0.00 / $0.00 | N/A |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-OSS 120B public-lane score: 18.9 (Estimated · #106/124)
- Phi-4-reasoning public-lane score: Coming soon

| Benchmark | GPT-OSS 120B | Phi-4-reasoning | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 29.61% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-OSS 120B public-lane score: 23.3 (Estimated · #110/149)
- Phi-4-reasoning public-lane score: Coming soon

| Benchmark | GPT-OSS 120B | Phi-4-reasoning | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 62.4% | Coming soon | Coming soon |
| React Native Evals | 71.6% | Coming soon | Coming soon |
| LiveCodeBench | Coming soon | 53.8% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-OSS 120B public-lane score: 61.6 (Unranked · 2 rankable rows)
- Phi-4-reasoning public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- GPT-OSS 120B public-lane score: 38.7 (Supported · #120/181)
- Phi-4-reasoning public-lane score: Coming soon

| Benchmark | GPT-OSS 120B | Phi-4-reasoning | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 90% | Coming soon | Coming soon |
| GPQA | 80.1% | 65.8% | GPT-OSS 120B |
| HLE | 14.9% | Coming soon | Coming soon |
| MMLU-Pro | Coming soon | 74.3% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-OSS 120B public-lane score: 84.3 (#48/128)
- Phi-4-reasoning public-lane score: Coming soon

| Benchmark | GPT-OSS 120B | Phi-4-reasoning | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 83.4% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- GPT-OSS 120B public-lane score: Coming soon
- Phi-4-reasoning public-lane score: Coming soon

| Benchmark | GPT-OSS 120B | Phi-4-reasoning | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | 95.8% | 75.3% | GPT-OSS 120B |
| AIME 2025 | 92.5% | 62.9% | GPT-OSS 120B |

## FAQ

### Is there enough evidence to pick between GPT-OSS 120B and Phi-4-reasoning?

Not yet. The models share only 3 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [GPT-OSS 120B vs GPT-OSS 20B](/compare/gpt-oss-120b-vs-gpt-oss-20b)
- [Phi-4-reasoning vs GPT-OSS 20B](/compare/gpt-oss-20b-vs-phi-4-reasoning)
- [GPT-OSS 120B vs Phi-4-reasoning-plus](/compare/gpt-oss-120b-vs-phi-4-reasoning-plus)
- [Phi-4-reasoning vs Phi-4-reasoning-plus](/compare/phi-4-reasoning-vs-phi-4-reasoning-plus)

## Explore More

- [GPT-OSS 120B profile](/models/gpt-oss-120b)
- [Phi-4-reasoning profile](/models/phi-4-reasoning)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)