Model comparison
DeepSeek V4 Flash (High) vs DeepSeek V4 Pro
Head-to-head evidence from 20 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Sibling matchup inside the DeepSeek V4 family.
Public leaderboard positions: DeepSeek V4 Flash (High) #92 (Estimated); DeepSeek V4 Pro #46 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. DeepSeek V4 Flash (High) and DeepSeek V4 Pro share 20 comparable benchmark results. 4 of 8 categories are comparable. 18 results are unique to DeepSeek V4 Flash (High); 3 to DeepSeek V4 Pro.
Updated July 23, 2026- Shared results
- 20
- DeepSeek V4 Flash (High) only
- 18
- DeepSeek V4 Pro only
- 3
- Comparable categories
- 4 / 8
DeepSeek V4 Flash (High) makes more sense if mathematics is the priority or you want the cheaper token bill, while DeepSeek V4 Pro is the cleaner fit if agentic is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
Confidence note. This is a partial-evidence comparison with 20 shared benchmark results across 6 evidence categories; 4 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
DeepSeek V4 Flash (High) and DeepSeek V4 Pro sit in the same DeepSeek V4 family. This page is less about two unrelated model lineages and more about how the siblings trade off on benchmark shape, token costs, and practical limits like context window.
DeepSeek V4 Pro is clearly ahead on the BenchAlign aggregate, 60.66 to 53.95. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
DeepSeek V4 Pro's sharpest advantage is in agentic, where it averages 59.1 against 55.3. The single biggest benchmark swing on the page is HMMT Feb 2026, 91.9% to 31.7%. DeepSeek V4 Flash (High) does hit back in mathematics, so the answer changes if that is the part of the workload you care about most.
DeepSeek V4 Pro is also the more expensive model on tokens at $0.43 input / $0.87 output per 1M tokens, versus $0.14 input / $0.28 output per 1M tokens for DeepSeek V4 Flash (High). That is roughly 3.1x on output cost alone. DeepSeek V4 Flash (High) is the reasoning model in the pair, while DeepSeek V4 Pro is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | DeepSeek V4 Flash (High) | Δ | DeepSeek V4 Pro |
|---|---|---|---|
| Math | DeepSeek V4 Flash (High)91.9 | Margin← 60.2 | DeepSeek V4 Pro31.7 |
| Knowledge | DeepSeek V4 Flash (High)52.1 | Margin← 10.8 | DeepSeek V4 Pro41.3 |
| Agentic | DeepSeek V4 Flash (High)55.3 | Margin→ 3.8 | DeepSeek V4 Pro59.1 |
| Coding | DeepSeek V4 Flash (High)68.5 | Margin← 3.2 | DeepSeek V4 Pro65.3 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
HMMT Feb 2026
MathA 91.9%B 31.7%Winner: DeepSeek V4 Flash (High)Δ 60.2HMMT Feb 2026: DeepSeek V4 Flash (High) scored 91.9%; DeepSeek V4 Pro scored 31.7%. DeepSeek V4 Flash (High) wins this benchmark. - Source ↗
HLE
KnowledgeA 29.4%B 7.7%Winner: DeepSeek V4 Flash (High)Δ 21.7HLE: DeepSeek V4 Flash (High) scored 29.4%; DeepSeek V4 Pro scored 7.7%. DeepSeek V4 Flash (High) wins this benchmark. - Source ↗
SimpleQA
KnowledgeA 28.9%B 45%Winner: DeepSeek V4 ProΔ 16.1SimpleQA: DeepSeek V4 Flash (High) scored 28.9%; DeepSeek V4 Pro scored 45%. DeepSeek V4 Pro wins this benchmark. - Source ↗
GPQA
KnowledgeA 87.4%B 72.9%Winner: DeepSeek V4 Flash (High)Δ 14.5GPQA: DeepSeek V4 Flash (High) scored 87.4%; DeepSeek V4 Pro scored 72.9%. DeepSeek V4 Flash (High) wins this benchmark. - Source ↗
SWE-bench Verified
CodingA 78.6%B 73.6%Winner: DeepSeek V4 Flash (High)Δ 5SWE-bench Verified: DeepSeek V4 Flash (High) scored 78.6%; DeepSeek V4 Pro scored 73.6%. DeepSeek V4 Flash (High) wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | DeepSeek V4 Flash (High) | DeepSeek V4 Pro | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | DeepSeek V4 Flash (High)$0.14 input / $0.28 output | DeepSeek V4 Pro$0.435 input / $0.87 output | DeepSeek V4 Flash (High) has the lower combined listed price. |
| Generation speedtokens per second | DeepSeek V4 Flash (High)Not available | DeepSeek V4 ProNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | DeepSeek V4 Flash (High)Not available | DeepSeek V4 ProNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | DeepSeek V4 Flash (High)1M | DeepSeek V4 Pro1M | Listed context windows are equal. |
Benchmark Deep Dive
AgenticDeepSeek V4 Pro wins12 benchmarks
| Benchmark | DeepSeek V4 Flash (High) | DeepSeek V4 Pro | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 56.6% | 59.1% | DeepSeek V4 Pro leads |
| BrowseCompSource | 53.5% | — | Not comparable |
| HLE w/ toolsSource | 40.3% | — | Not comparable |
| MCP AtlasSource | 67.4% | 69.4% | DeepSeek V4 Pro leads |
| ToolathlonSource | 43.5% | 46.3% | DeepSeek V4 Pro leads |
| τ²-bench resultsSource | 95.6% | — | Not comparable |
| AA Agentic IndexSource | 28.2% | — | Not comparable |
| GDPval-AASource | 32.4% | — | Not comparable |
| GDPval-AASource | 1147 | — | Not comparable |
| Claw-EvalSource | — | 59.8% | Not comparable |
| Gert LabsSource | — | 50.28% | Not comparable |
| ResearchClawBenchSource | — | 17.1% | Not comparable |
CodingDeepSeek V4 Flash (High) wins7 benchmarks
| Benchmark | DeepSeek V4 Flash (High) | DeepSeek V4 Pro | Result |
|---|---|---|---|
| CodeforcesSource | 2816.0 | — | Not comparable |
| SWE-bench VerifiedSource | 78.6% | 73.6% | DeepSeek V4 Flash (High) leads |
| SWE-bench ProSource | 52.3% | 52.1% | DeepSeek V4 Flash (High) leads |
| SWE MultilingualSource | 70.2% | 69.8% | DeepSeek V4 Flash (High) leads |
| Terminal-Bench 2.0Source | 56.6% | 59.1% | DeepSeek V4 Pro leads |
| AA-SciCodeSource | 42.0% | — | Not comparable |
| AA Coding IndexSource | 52.0% | — | Not comparable |
Reasoning4 benchmarks
KnowledgeDeepSeek V4 Flash (High) wins12 benchmarks
| Benchmark | DeepSeek V4 Flash (High) | DeepSeek V4 Pro | Result |
|---|---|---|---|
| MMLU-ProSource | 86.4% | 82.9% | DeepSeek V4 Flash (High) leads |
| SimpleQASource | 28.9% | 45% | DeepSeek V4 Pro leads |
| Chinese-SimpleQASource | 73.2% | 75.8% | DeepSeek V4 Pro leads |
| GPQASource | 87.4% | 72.9% | DeepSeek V4 Flash (High) leads |
| GPQA-DSource | 87.4% | 72.9% | DeepSeek V4 Flash (High) leads |
| HLESource | 29.4% | 7.7% | DeepSeek V4 Flash (High) leads |
| Artificial Analysis Intelligence IndexSource | 37.5% | — | Not comparable |
| AA-GPQA DiamondSource | 86.7% | — | Not comparable |
| AA-HLESource | 27.8% | — | Not comparable |
| AA-Omniscience IndexSource | -22.3% | — | Not comparable |
| AA-Omniscience AccuracySource | 35.5% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 89.7% | — | Not comparable |
MathDeepSeek V4 Flash (High) wins4 benchmarks
Multimodal1 benchmarks
| Benchmark | DeepSeek V4 Flash (High) | DeepSeek V4 Pro | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1238 | 1264 | DeepSeek V4 Pro leads |
Inst. Following1 benchmarks
| Benchmark | DeepSeek V4 Flash (High) | DeepSeek V4 Pro | Result |
|---|---|---|---|
| AA-IFBenchSource | 73.5% | — | Not comparable |
Frequently Asked Questions (5)
Which is better, DeepSeek V4 Flash (High) or DeepSeek V4 Pro?
DeepSeek V4 Flash (High) and DeepSeek V4 Pro are sibling variants in the DeepSeek V4 family, so the right pick depends on whether you value the better benchmark line, cheaper tokens, or the larger context window. DeepSeek V4 Pro is ahead on BenchLM's BenchAlign leaderboard 60.66 to 53.95.
Which is better for knowledge tasks, DeepSeek V4 Flash (High) or DeepSeek V4 Pro?
DeepSeek V4 Flash (High) has the edge for knowledge tasks in this comparison, averaging 52.1 versus 41.3. Inside this category, HLE is the benchmark that creates the most daylight between them.
Which is better for coding, DeepSeek V4 Flash (High) or DeepSeek V4 Pro?
DeepSeek V4 Flash (High) has the edge for coding in this comparison, averaging 68.5 versus 65.3. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
Which is better for math, DeepSeek V4 Flash (High) or DeepSeek V4 Pro?
DeepSeek V4 Flash (High) has the edge for math in this comparison, averaging 91.9 versus 31.7. Inside this category, Apex Shortlist is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, DeepSeek V4 Flash (High) or DeepSeek V4 Pro?
DeepSeek V4 Pro has the edge for agentic tasks in this comparison, averaging 59.1 versus 55.3. Inside this category, Toolathlon is the benchmark that creates the most daylight between them.
Related Comparisons
Explore More
Choose a model with this week’s evidence
Join 2,000+ readers for ranking moves, pricing changes, and the claims that still need proof.
One email each week. Unsubscribe anytime.