# Claude Opus 4.6 vs DeepSeek V4.1 Flash

> Side-by-side benchmark comparison for Claude Opus 4.6 and DeepSeek V4.1 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-6-vs-deepseek-v4-1-flash
- 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. DeepSeek V4.1 Flash 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 55.
- The biggest single benchmark swing is CyberGym in Agentic, with scores of 66.6% and 88.1%.
- DeepSeek V4.1 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Claude Opus 4.6 | DeepSeek V4.1 Flash |
|----------|----------|----------|
| Creator | Anthropic | DeepSeek |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 69 | null |
| Benchmarks Covered | 33 | 21 |
| Pricing (input/output) | $5.00 / $25.00 | $0.30 / $1.20 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 50.1 (Supported · #58/152)
- DeepSeek V4.1 Flash public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | DeepSeek V4.1 Flash | 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% | 88.1% | DeepSeek V4.1 Flash |
| 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 | 90.6% | Coming soon |
| terminalBench3 | Coming soon | 30% | Coming soon |
| Terminal-Bench 4.0 | Coming soon | 31.20% | Coming soon |
| ExploitGym | Coming soon | 15.3% | Coming soon |
| HLE w/ tools | Coming soon | 63.9% | Coming soon |
| AutomationBench | Coming soon | 54.8% | Coming soon |
| Agents' Last Exam | Coming soon | 31.8% | Coming soon |

### Coding

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 56.7 (Supported · #37/151)
- DeepSeek V4.1 Flash public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | DeepSeek V4.1 Flash | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80.8% | Coming soon | Coming soon |
| SWE-bench Verified* | 75.6% | Coming soon | Coming soon |
| LiveCodeBench Pro | 70.7% | Coming soon | Coming soon |
| SWE-bench Pro | 53.4% | Coming soon | Coming soon |
| 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 |
| Codeforces | Coming soon | 3471.0 | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 90.6% | Coming soon |
| terminalBench3 | Coming soon | 30% | Coming soon |
| DeepSWE | Coming soon | 74.2% | Coming soon |
| ProgramBench | Coming soon | 20.3% | Coming soon |
| NL2Repo | Coming soon | 65.4% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 59.5 (#28/48)
- DeepSeek V4.1 Flash public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | DeepSeek V4.1 Flash | 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 |
| Chartography (tools) | Coming soon | 78.9% | Coming soon |
| BabyVision w/ Python | Coming soon | 89.6% | Coming soon |
| ZeroBench w/ Python | Coming soon | 49.0% | Coming soon |

### Reasoning

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 67.1 (Unranked · 2 rankable rows)
- DeepSeek V4.1 Flash public-lane score: Coming soon

### Knowledge

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 61.2 (Estimated · #34/182)
- DeepSeek V4.1 Flash public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | DeepSeek V4.1 Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 91.3% | 90.9% | Claude Opus 4.6 |
| GPQA-D | 89.2% | 90.9% | DeepSeek V4.1 Flash |
| SuperGPQA | 95% | Coming soon | Coming soon |
| MMLU-Pro | 82% | Coming soon | Coming soon |
| MMLU-Pro (Arcee) | 89.1% | Coming soon | Coming soon |
| HLE | 53% | 36.8% | Claude Opus 4.6 |
| 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 (#77/121)
- DeepSeek V4.1 Flash public-lane score: Coming soon

### Mathematics

- Winner: Coming soon
- Claude Opus 4.6 public-lane score: 58.6 (Unranked · 3 rankable rows)
- DeepSeek V4.1 Flash public-lane score: Coming soon

| Benchmark | Claude Opus 4.6 | DeepSeek V4.1 Flash | 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 |
| Apex | Coming soon | 65.6% | Coming soon |

## FAQ

### Which is better overall, Claude Opus 4.6 or DeepSeek V4.1 Flash?

Claude Opus 4.6 is ahead overall on BenchLM right now.

### 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 DeepSeek V4.1 Flash cover on BenchLM?

DeepSeek V4.1 Flash currently has 21 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)
- [DeepSeek V4.1 Flash vs Claude Opus 4.6 (Adaptive)](/compare/claude-opus-4-6-thinking-vs-deepseek-v4-1-flash)
- [Claude Opus 4.6 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-opus-4-6)
- [DeepSeek V4.1 Flash vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-deepseek-v4-1-flash)

## Explore More

- [Claude Opus 4.6 profile](/models/claude-opus-4-6)
- [DeepSeek V4.1 Flash profile](/models/deepseek-v4-1-flash)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)