# DeepSeek V4.1 Flash vs GPT-6 Astra

> Side-by-side benchmark comparison for DeepSeek V4.1 Flash and GPT-6 Astra across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/deepseek-v4-1-flash-vs-gpt-6-astra
- Last updated: September 10, 2026

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

## Quick Verdict

Pick GPT-6 Astra 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

- GPT-6 Astra leads overall 84.12 to 55.
- The biggest single benchmark swing is Agents' Last Exam in Agentic, with scores of 31.8% and 59.3%.
- DeepSeek V4.1 Flash is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-6 Astra also has the larger context window at 1.05M.

## Model Snapshot

| Property | DeepSeek V4.1 Flash | GPT-6 Astra |
|----------|----------|----------|
| Creator | DeepSeek | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Overall Score | null | 84.12 |
| Benchmarks Covered | 21 | 25 |
| Pricing (input/output) | $0.30 / $1.20 | $10.00 / $50.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- DeepSeek V4.1 Flash public-lane score: Coming soon
- GPT-6 Astra public-lane score: 70.4 (Supported · #5/152)

| Benchmark | DeepSeek V4.1 Flash | GPT-6 Astra | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 90.6% | Coming soon | Coming soon |
| terminalBench3 | 30% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | 31.20% | 57.90% | GPT-6 Astra |
| CyberGym | 88.1% | Coming soon | Coming soon |
| ExploitGym | 15.3% | 42.4% | GPT-6 Astra |
| HLE w/ tools | 63.9% | 57.2% | DeepSeek V4.1 Flash |
| AutomationBench | 54.8% | 41.4% | DeepSeek V4.1 Flash |
| Agents' Last Exam | 31.8% | 59.3% | GPT-6 Astra |
| BrowseComp | Coming soon | 91.5% | Coming soon |
| OSWorld 2.0 | Coming soon | 72.6% | Coming soon |
| Terminal-Bench-Science 0.1 | Coming soon | 64.6% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 87.3% | Coming soon |

### Coding

- Winner: Coming soon
- DeepSeek V4.1 Flash public-lane score: Coming soon
- GPT-6 Astra public-lane score: 74.6 (Supported · #4/151)

| Benchmark | DeepSeek V4.1 Flash | GPT-6 Astra | Winner |
|-----------|-----------|-----------|--------|
| Codeforces | 3471.0 | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 90.6% | Coming soon | Coming soon |
| terminalBench3 | 30% | Coming soon | Coming soon |
| DeepSWE | 74.2% | 74.1% | DeepSeek V4.1 Flash |
| ProgramBench | 20.3% | Coming soon | Coming soon |
| NL2Repo | 65.4% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | Coming soon | 53.3% | Coming soon |
| FrontierCode 1.1 Extended | Coming soon | 64.5% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- DeepSeek V4.1 Flash public-lane score: Coming soon
- GPT-6 Astra public-lane score: 82.8 (Unranked · 3 rankable rows)

| Benchmark | DeepSeek V4.1 Flash | GPT-6 Astra | Winner |
|-----------|-----------|-----------|--------|
| Chartography (tools) | 78.9% | Coming soon | Coming soon |
| BabyVision w/ Python | 89.6% | Coming soon | Coming soon |
| ZeroBench w/ Python | 49.0% | Coming soon | Coming soon |
| ScreenSpot Pro | Coming soon | 92.7% | Coming soon |
| BenchCAD Vision2Code (tools) | Coming soon | 0.959 | Coming soon |

### Reasoning

- Winner: Coming soon
- DeepSeek V4.1 Flash public-lane score: Coming soon
- GPT-6 Astra public-lane score: 89.5 (#1/18)

| Benchmark | DeepSeek V4.1 Flash | GPT-6 Astra | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | Coming soon | 98.50% | Coming soon |
| ARC-AGI-2 | Coming soon | 95% | Coming soon |
| ARC-AGI-3 | Coming soon | 62.7% | Coming soon |
| GeneBench-Pro | Coming soon | 37.8% | Coming soon |
| MRCR v2 256K-512K | Coming soon | 100.0% | Coming soon |
| MRCR v2 512K-1M | Coming soon | 96.3% | Coming soon |

### Knowledge

- Winner: Coming soon
- DeepSeek V4.1 Flash public-lane score: Coming soon
- GPT-6 Astra public-lane score: 82.4 (Supported · #3/182)

| Benchmark | DeepSeek V4.1 Flash | GPT-6 Astra | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 90.9% | 96% | GPT-6 Astra |
| GPQA-D | 90.9% | 96.0% | GPT-6 Astra |
| HLE | 36.8% | Coming soon | Coming soon |
| HealthBench Professional | Coming soon | 63.4% | Coming soon |
| HealthBench Hard | Coming soon | 36.3% | Coming soon |

### Mathematics

- Winner: Coming soon
- DeepSeek V4.1 Flash public-lane score: Coming soon
- GPT-6 Astra public-lane score: 85.2 (Unranked · 1 rankable row)

| Benchmark | DeepSeek V4.1 Flash | GPT-6 Astra | Winner |
|-----------|-----------|-----------|--------|
| Apex | 65.6% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 97.600% | Coming soon |

## FAQ

### Which is better overall, DeepSeek V4.1 Flash or GPT-6 Astra?

GPT-6 Astra is ahead overall on BenchLM right now.

### How many benchmarks does DeepSeek V4.1 Flash cover on BenchLM?

DeepSeek V4.1 Flash currently has 21 sourced benchmark scores on BenchLM.

### How many benchmarks does GPT-6 Astra cover on BenchLM?

GPT-6 Astra currently has 25 sourced benchmark scores on BenchLM.

## Related Comparisons

- [DeepSeek V4.1 Flash vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-deepseek-v4-1-flash)
- [GPT-6 Astra vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gpt-6-astra)
- [DeepSeek V4.1 Flash vs Claude Opus 5](/compare/claude-opus-5-vs-deepseek-v4-1-flash)
- [GPT-6 Astra vs Claude Opus 5](/compare/claude-opus-5-vs-gpt-6-astra)

## Explore More

- [DeepSeek V4.1 Flash profile](/models/deepseek-v4-1-flash)
- [GPT-6 Astra profile](/models/gpt-6-astra)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)