Model comparison
DeepSeek V4 Flash Base vs DeepSeek V4 Pro (High)
Head-to-head evidence from 2 shared benchmark results across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Sibling matchup inside the DeepSeek V4 family.
Public leaderboard positions: DeepSeek V4 Flash Base unranked (Not scored); DeepSeek V4 Pro (High) #81 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. DeepSeek V4 Flash Base and DeepSeek V4 Pro (High) share 2 comparable benchmark results. 1 of 8 categories are comparable. 22 results are unique to DeepSeek V4 Flash Base; 36 to DeepSeek V4 Pro (High).
Updated July 23, 2026- Shared results
- 2
- DeepSeek V4 Flash Base only
- 22
- DeepSeek V4 Pro (High) only
- 36
- Comparable categories
- 1 / 8
DeepSeek V4 Flash Base makes more sense if you would rather avoid the extra latency and token burn of a reasoning model, while DeepSeek V4 Pro (High) is the cleaner fit if knowledge is the priority or you want the stronger reasoning-first profile.
Confidence note. This is a partial-evidence comparison with 2 shared benchmark results across 1 evidence category; 1 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 Base and DeepSeek V4 Pro (High) 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 Flash Base and DeepSeek V4 Pro (High) finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.
DeepSeek V4 Pro (High) is the reasoning model in the pair, while DeepSeek V4 Flash Base 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 Base | Δ | DeepSeek V4 Pro (High) |
|---|---|---|---|
| Knowledge | DeepSeek V4 Flash Base56.4 | Margin→ 0.6 | DeepSeek V4 Pro (High)57.0 |
| Agentic | DeepSeek V4 Flash BaseNot measured | MarginNo overlap | DeepSeek V4 Pro (High)70.6 |
| Coding | DeepSeek V4 Flash BaseNot measured | MarginNo overlap | DeepSeek V4 Pro (High)69.8 |
| Reasoning | DeepSeek V4 Flash Base44.7 | MarginNo overlap | DeepSeek V4 Pro (High)Not measured |
| Math | DeepSeek V4 Flash BaseNot measured | MarginNo overlap | DeepSeek V4 Pro (High)94.0 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
MMLU-Pro
KnowledgeA 68.3%B 87.1%Winner: DeepSeek V4 Pro (High)Δ 18.8MMLU-Pro: DeepSeek V4 Flash Base scored 68.3%; DeepSeek V4 Pro (High) scored 87.1%. DeepSeek V4 Pro (High) wins this benchmark. - Source ↗
SimpleQA
KnowledgeA 30.1%B 46.2%Winner: DeepSeek V4 Pro (High)Δ 16.1SimpleQA: DeepSeek V4 Flash Base scored 30.1%; DeepSeek V4 Pro (High) scored 46.2%. DeepSeek V4 Pro (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 Base | DeepSeek V4 Pro (High) | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | DeepSeek V4 Flash BaseNot available | DeepSeek V4 Pro (High)$0.435 input / $0.87 output | A complete price comparison is not available. |
| Generation speedtokens per second | DeepSeek V4 Flash BaseNot available | DeepSeek V4 Pro (High)Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | DeepSeek V4 Flash BaseNot available | DeepSeek V4 Pro (High)Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | DeepSeek V4 Flash Base1M | DeepSeek V4 Pro (High)1M | Listed context windows are equal. |
Benchmark Deep Dive
Agentic9 benchmarks
| Benchmark | DeepSeek V4 Flash Base | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | — | 63.3% | Not comparable |
| BrowseCompSource | — | 80.4% | Not comparable |
| HLE w/ toolsSource | — | 44.7% | Not comparable |
| MCP AtlasSource | — | 74.2% | Not comparable |
| ToolathlonSource | — | 49% | Not comparable |
| τ²-bench resultsSource | — | 94.2% | Not comparable |
| GDPval-AASource | — | 39.9% | Not comparable |
| GDPval-AASource | — | 1299 | Not comparable |
| AA Agentic IndexSource | — | 34.4% | Not comparable |
Coding9 benchmarks
| Benchmark | DeepSeek V4 Flash Base | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| BigCodeBenchSource | 56.8% | — | Not comparable |
| HumanEvalSource | 69.5% | — | Not comparable |
| CodeforcesSource | — | 2919.0 | Not comparable |
| SWE-bench VerifiedSource | — | 79.4% | Not comparable |
| SWE-bench ProSource | — | 54.4% | Not comparable |
| SWE MultilingualSource | — | 74.1% | Not comparable |
| Terminal-Bench 2.0Source | — | 63.3% | Not comparable |
| AA-SciCodeSource | — | 46.4% | Not comparable |
| AA Coding IndexSource | — | 58.7% | Not comparable |
Reasoning10 benchmarks
| Benchmark | DeepSeek V4 Flash Base | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| BBHSource | 86.9% | — | Not comparable |
| DROPSource | 88.6% | — | Not comparable |
| HellaSwagSource | 85.7% | — | Not comparable |
| WinoGrandeSource | 79.5% | — | Not comparable |
| CLUEWSCSource | 82.2% | — | Not comparable |
| LongBench v2Source | 44.7% | — | Not comparable |
| MRCR 1MSource | — | 83.3% | Not comparable |
| CorpusQA 1MSource | — | 56.5% | Not comparable |
| AA-LCRSource | — | 65.0% | Not comparable |
| CritPtSource | — | 10.0% | Not comparable |
KnowledgeDeepSeek V4 Pro (High) wins22 benchmarks
| Benchmark | DeepSeek V4 Flash Base | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| AGIEvalSource | 82.6% | — | Not comparable |
| MMLUSource | 88.7% | — | Not comparable |
| MMLU-ReduxSource | 89.4% | — | Not comparable |
| MMLU-ProSource | 68.3% | 87.1% | DeepSeek V4 Pro (High) leads |
| MMMLUSource | 88.8% | — | Not comparable |
| C-EvalSource | 92.1% | — | Not comparable |
| CMMLUSource | 90.4% | — | Not comparable |
| MultiLoKoSource | 42.2% | — | Not comparable |
| SimpleQASource | 30.1% | 46.2% | DeepSeek V4 Pro (High) leads |
| SuperGPQASource | 46.5% | — | Not comparable |
| FACTS ParametricSource | 33.9% | — | Not comparable |
| TriviaQASource | 82.8% | — | Not comparable |
| Chinese-SimpleQASource | — | 77.7% | Not comparable |
| GPQASource | — | 89.1% | Not comparable |
| GPQA-DSource | — | 89.1% | Not comparable |
| HLESource | — | 34.5% | Not comparable |
| Artificial Analysis Intelligence IndexSource | — | 43.1% | Not comparable |
| AA-GPQA DiamondSource | — | 90.5% | Not comparable |
| AA-HLESource | — | 33.5% | Not comparable |
| AA-Omniscience IndexSource | — | -9.7% | Not comparable |
| AA-Omniscience AccuracySource | — | 41.8% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 88.6% | Not comparable |
Math7 benchmarks
| Benchmark | DeepSeek V4 Flash Base | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| GSM8KSource | 90.8% | — | Not comparable |
| MATHSource | 57.4% | — | Not comparable |
| CMathSource | 93.6% | — | Not comparable |
| HMMT Feb 2026Source | — | 94.0% | Not comparable |
| IMOAnswerBenchSource | — | 88.0% | Not comparable |
| ApexSource | — | 27.4% | Not comparable |
| Apex ShortlistSource | — | 85.5% | Not comparable |
Multilingual1 benchmarks
| Benchmark | DeepSeek V4 Flash Base | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| MGSMSource | 85.7% | — | Not comparable |
Multimodal1 benchmarks
| Benchmark | DeepSeek V4 Flash Base | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| Design Arena WebsiteSource | — | 1264 | Not comparable |
Inst. Following1 benchmarks
| Benchmark | DeepSeek V4 Flash Base | DeepSeek V4 Pro (High) | Result |
|---|---|---|---|
| AA-IFBenchSource | — | 71.3% | Not comparable |
Frequently Asked Questions (2)
Which is better, DeepSeek V4 Flash Base or DeepSeek V4 Pro (High)?
DeepSeek V4 Flash Base and DeepSeek V4 Pro (High) 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. They are tied on the BenchAlign leaderboard on the current data.
Which is better for knowledge tasks, DeepSeek V4 Flash Base or DeepSeek V4 Pro (High)?
DeepSeek V4 Pro (High) has the edge for knowledge tasks in this comparison, averaging 57 versus 56.4. Inside this category, MMLU-Pro is the benchmark that creates the most daylight between them.
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