# Claude 4 Opus Thinking vs Grok Code Fast 1

> Side-by-side benchmark comparison for Claude 4 Opus Thinking and Grok Code Fast 1 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-4-opus-thinking-vs-grok-code-fast-1
- 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 4 Opus Thinking and Grok Code Fast 1.

## Summary

- Claude 4 Opus Thinking and Grok Code Fast 1 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 4 Opus Thinking | Grok Code Fast 1 |
|----------|----------|----------|
| Creator | Anthropic | xAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 200K | 256K |
| Independent public score (not head-to-head) | null | 34.16 |
| Benchmarks Covered | 4 | 2 |
| Pricing (input/output) | N/A | $0.20 / $1.50 |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Grok Code Fast 1 public-lane score: 16.6 (Estimated · #128/148)

| Benchmark | Claude 4 Opus Thinking | Grok Code Fast 1 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | Coming soon | 70.8% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 62.0% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Grok Code Fast 1 public-lane score: 62.3 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Grok Code Fast 1 public-lane score: Coming soon

| Benchmark | Claude 4 Opus Thinking | Grok Code Fast 1 | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 76.5% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Grok Code Fast 1 public-lane score: 35.9 (Estimated · #129/181)

| Benchmark | Claude 4 Opus Thinking | Grok Code Fast 1 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 79.6% | Coming soon | Coming soon |
| MMMLU | 88.8% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Grok Code Fast 1 public-lane score: 48.2 (#88/128)

### Mathematics

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Grok Code Fast 1 public-lane score: Coming soon

| Benchmark | Claude 4 Opus Thinking | Grok Code Fast 1 | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 75.5% | Coming soon | Coming soon |

## FAQ

### Can I compare Claude 4 Opus Thinking and Grok Code Fast 1 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 4 Opus Thinking vs Claude 4 Opus](/compare/claude-4-opus-vs-claude-4-opus-thinking)
- [Grok Code Fast 1 vs Claude 4 Opus](/compare/claude-4-opus-vs-grok-code-fast-1)
- [Claude 4 Opus Thinking vs Claude Opus 5.5](/compare/claude-4-opus-thinking-vs-claude-opus-5-5)
- [Grok Code Fast 1 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-grok-code-fast-1)

## Explore More

- [Claude 4 Opus Thinking profile](/models/claude-4-opus-thinking)
- [Grok Code Fast 1 profile](/models/grok-code-fast-1)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)