# Claude Opus 4.5 Thinking vs Grok 2

> Side-by-side benchmark comparison for Claude Opus 4.5 Thinking and Grok 2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-5-thinking-vs-grok-2
- Last updated: October 14, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Claude Opus 4.5 Thinking and Grok 2.

## Summary

- Claude Opus 4.5 Thinking and Grok 2 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Claude Opus 4.5 Thinking | Grok 2 |
|----------|----------|----------|
| Creator | Anthropic | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 200K | Unknown |
| Independent public score (not head-to-head) | 54.17 | null |
| Benchmarks Covered | 3 | 5 |
| Pricing (input/output) | N/A | N/A |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: Coming soon
- Grok 2 public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 Thinking | Grok 2 | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 20.63% | Coming soon | Coming soon |
| HumanEval | Coming soon | 88.4% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: 54.2 (Unranked · 4 rankable rows)
- Grok 2 public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 Thinking | Grok 2 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | 80.00% | Coming soon | Coming soon |
| ARC-AGI-2 | 37.6% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: 73.5 (Unranked · 1 rankable row)
- Grok 2 public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 Thinking | Grok 2 | Winner |
|-----------|-----------|-----------|--------|
| MMMU | Coming soon | 66.1% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: 54.9 (Estimated · #61/181)
- Grok 2 public-lane score: Coming soon

| Benchmark | Claude Opus 4.5 Thinking | Grok 2 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 56% | Coming soon |
| MMLU | Coming soon | 87.5% | Coming soon |
| MMLU-Pro | Coming soon | 75.5% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: 69.9 (#69/128)
- Grok 2 public-lane score: Coming soon

## FAQ

### Can I compare Claude Opus 4.5 Thinking and Grok 2 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Claude Opus 4.5 Thinking vs Claude Opus 4.5](/compare/claude-opus-4-5-vs-claude-opus-4-5-thinking)
- [Grok 2 vs Claude Opus 4.5](/compare/claude-opus-4-5-vs-grok-2)
- [Claude Opus 4.5 Thinking vs Grok 2 mini](/compare/claude-opus-4-5-thinking-vs-grok-2-mini)
- [Grok 2 vs Grok 2 mini](/compare/grok-2-vs-grok-2-mini)

## Explore More

- [Claude Opus 4.5 Thinking profile](/models/claude-opus-4-5-thinking)
- [Grok 2 profile](/models/grok-2)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)