# Claude Opus 4.7 vs GPT-OSS 120B

> Side-by-side benchmark comparison for Claude Opus 4.7 and GPT-OSS 120B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-7-vs-gpt-oss-120b
- Last updated: October 14, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Opus 4.7 and GPT-OSS 120B share only 2 sourced benchmark rows.

## Summary

- Only 2 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 lower published output-token price.
- Claude Opus 4.7 has the larger published context window at 1M.

## Model Snapshot

| Property | Claude Opus 4.7 | GPT-OSS 120B |
|----------|----------|----------|
| Creator | Anthropic | OpenAI |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 1M | 128K |
| Independent public score (not head-to-head) | 65.18 | 36.86 |
| Benchmarks Covered | 15 | 8 |
| Pricing (input/output) | $5.00 / $25.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Opus 4.7 public-lane score: 54 (Supported · #40/124)
- GPT-OSS 120B public-lane score: 18.9 (Estimated · #106/124)

| Benchmark | Claude Opus 4.7 | GPT-OSS 120B | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 65.59% | 29.61% | Claude Opus 4.7 |
| ResearchClawBench | 20.7% | Coming soon | Coming soon |
| OSWorld 2.0 | 13.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 68.5% | Coming soon | Coming soon |
| ApprenticeBench | 7% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Opus 4.7 public-lane score: 55.6 (Supported · #30/149)
- GPT-OSS 120B public-lane score: 23.3 (Estimated · #110/149)

| Benchmark | Claude Opus 4.7 | GPT-OSS 120B | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 71.00% | Coming soon | Coming soon |
| React Native Evals | 82.8% | 71.6% | Claude Opus 4.7 |
| FrontierCode 1.1 Main | 38.5% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 85.1% | Coming soon | Coming soon |
| SWE-bench (Vals) | 82.0% | Coming soon | Coming soon |
| PostTrainBench v1.1 | 28.6% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 62.4% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Opus 4.7 public-lane score: Coming soon
- GPT-OSS 120B public-lane score: 61.6 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- Claude Opus 4.7 public-lane score: 65.3 (Estimated · #30/181)
- GPT-OSS 120B public-lane score: 38.7 (Supported · #120/181)

| Benchmark | Claude Opus 4.7 | GPT-OSS 120B | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 90.2% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 89.9% | Coming soon | Coming soon |
| MMLU | Coming soon | 90% | Coming soon |
| GPQA | Coming soon | 80.1% | Coming soon |
| HLE | Coming soon | 14.9% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude Opus 4.7 public-lane score: Coming soon
- GPT-OSS 120B public-lane score: 84.3 (#48/128)

### Mathematics

- Winner: Insufficient shared evidence
- Claude Opus 4.7 public-lane score: 72.9 (Unranked · 2 rankable rows)
- GPT-OSS 120B public-lane score: Coming soon

| Benchmark | Claude Opus 4.7 | GPT-OSS 120B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 70.175% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 31.707% | Coming soon | Coming soon |
| AIME 2024 | Coming soon | 95.8% | Coming soon |
| AIME 2025 | Coming soon | 92.5% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Opus 4.7 and GPT-OSS 120B?

Not yet. The models share only 2 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

- [Claude Opus 4.7 vs Claude Opus 4.7 (Adaptive)](/compare/claude-opus-4-7-vs-claude-opus-4-7-adaptive)
- [GPT-OSS 120B vs Claude Opus 4.7 (Adaptive)](/compare/claude-opus-4-7-adaptive-vs-gpt-oss-120b)
- [Claude Opus 4.7 vs GPT-OSS 20B](/compare/claude-opus-4-7-vs-gpt-oss-20b)
- [GPT-OSS 120B vs GPT-OSS 20B](/compare/gpt-oss-120b-vs-gpt-oss-20b)

## Explore More

- [Claude Opus 4.7 profile](/models/claude-opus-4-7)
- [GPT-OSS 120B profile](/models/gpt-oss-120b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)