# Claude Opus 4.6 vs Granite 4.2 30B

> Side-by-side benchmark comparison for Claude Opus 4.6 and Granite 4.2 30B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-6-vs-granite-4-2-30b
- Last updated: September 10, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Claude Opus 4.6 if you want the stronger benchmark profile. Granite 4.2 30B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Opus 4.6 leads overall 69 to 50.
- The clearest category separation is in reasoning, where the averages are 67.1 for Claude Opus 4.6 and 54.7 for Granite 4.2 30B.
- The biggest single benchmark swing is GPQA in Knowledge, with scores of 91.3% and 66.4%.
- Granite 4.2 30B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Claude Opus 4.6 also has the larger context window at 1M.

## Model Snapshot

| Property | Claude Opus 4.6 | Granite 4.2 30B |
|----------|----------|----------|
| Creator | Anthropic | IBM |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 1M | 128K |
| Overall Score | 69 | null |
| Benchmarks Covered | 33 | 14 |
| Pricing (input/output) | $5.00 / $25.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 50.1 (Supported · #56/152)
- Granite 4.2 30B public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | Granite 4.2 30B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 65.4% | Coming soon | Coming soon |
| BrowseComp | 83.7% | Coming soon | Coming soon |
| OSWorld-Verified | 72.7% | Coming soon | Coming soon |
| Claw-Eval | 70.4% | Coming soon | Coming soon |
| DeepSearchQA | 73.7% | Coming soon | Coming soon |
| CyberGym | 66.6% | Coming soon | Coming soon |
| Gert Labs | 61.85% | Coming soon | Coming soon |
| ResearchClawBench | 19.9% | Coming soon | Coming soon |
| JobBench | 36.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 29.2% | Coming soon |
| τ³-bench results | Coming soon | 62.0% | Coming soon |
| BFCL v4 | Coming soon | 61.4% | Coming soon |

### Coding

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 56.6 (Supported · #37/151)
- Granite 4.2 30B public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | Granite 4.2 30B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80.8% | 57% | Claude Opus 4.6 |
| SWE-bench Verified* | 75.6% | Coming soon | Coming soon |
| LiveCodeBench Pro | 70.7% | Coming soon | Coming soon |
| SWE-bench Pro | 53.4% | 33.3% | Claude Opus 4.6 |
| SWE-Rebench | 65.3% | Coming soon | Coming soon |
| React Native Evals | 84.1% | Coming soon | Coming soon |
| Vibe Code Bench | 57.57% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 26.9% | Coming soon | Coming soon |
| SWE Multilingual | Coming soon | 41.9% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 29.2% | Coming soon |
| LiveCodeBench v6 | Coming soon | 75.8% | Coming soon |
| SciCode | Coming soon | 38.8% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 59.5 (#28/48)
- Granite 4.2 30B public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | Granite 4.2 30B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 77.3% | Coming soon | Coming soon |
| ERQA | 51.6% | Coming soon | Coming soon |
| ScreenSpot Pro | 83.1% | Coming soon | Coming soon |
| MedXpertQA (MM) | 64.8% | Coming soon | Coming soon |

### Reasoning

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 67.1 (Unranked · 2 rankable rows)
- Granite 4.2 30B public-lane score: 54.7 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 61 (Estimated · #34/183)
- Granite 4.2 30B public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | Granite 4.2 30B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 91.3% | 66.4% | Claude Opus 4.6 |
| GPQA-D | 89.2% | Coming soon | Coming soon |
| SuperGPQA | 95% | Coming soon | Coming soon |
| MMLU-Pro | 82% | 77.6% | Claude Opus 4.6 |
| MMLU-Pro (Arcee) | 89.1% | Coming soon | Coming soon |
| HLE | 53% | Coming soon | Coming soon |
| HLE w/o tools | 40% | Coming soon | Coming soon |
| HealthBench Hard | 14.8% | Coming soon | Coming soon |
| MedXpertQA (Text) | 52.1% | Coming soon | Coming soon |

### Instruction Following

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 52.6 (#78/123)
- Granite 4.2 30B public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | Granite 4.2 30B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 77.2% | Coming soon |

### Mathematics

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 58.6 (Unranked · 3 rankable rows)
- Granite 4.2 30B public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | Granite 4.2 30B | Winner |
|-----------|-----------|-----------|--------|
| AIME25 (Arcee) | 99.8% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 40.700% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 22.900% | Coming soon | Coming soon |
| AIME 2025 | Coming soon | 89.2% | Coming soon |
| HMMT Feb 2025 | Coming soon | 89.2% | Coming soon |

## FAQ

### Which is better overall, Claude Opus 4.6 or Granite 4.2 30B?

Claude Opus 4.6 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Opus 4.6 and Granite 4.2 30B?

The widest category gap is in reasoning, where the averages are 67.1 for Claude Opus 4.6 and 54.7 for Granite 4.2 30B.

### How many benchmarks does Claude Opus 4.6 cover on BenchLM?

Claude Opus 4.6 currently has 33 sourced benchmark scores on BenchLM.

### How many benchmarks does Granite 4.2 30B cover on BenchLM?

Granite 4.2 30B currently has 14 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 4.6 vs Claude Opus 4.6 (Adaptive)](/compare/claude-opus-4-6-vs-claude-opus-4-6-thinking)
- [Granite 4.2 30B vs Claude Opus 4.6 (Adaptive)](/compare/claude-opus-4-6-thinking-vs-granite-4-2-30b)
- [Claude Opus 4.6 vs Granite 4.2 8B](/compare/claude-opus-4-6-vs-granite-4-2-8b)
- [Granite 4.2 30B vs Granite 4.2 8B](/compare/granite-4-2-30b-vs-granite-4-2-8b)

## Explore More

- [Claude Opus 4.6 profile](/models/claude-opus-4-6)
- [Granite 4.2 30B profile](/models/granite-4-2-30b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)