Model comparison
DeepSeek V4 Flash vs o1-pro
Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: DeepSeek V4 Flash #61 (Estimated); o1-pro #141 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. DeepSeek V4 Flash and o1-pro share 1 comparable benchmark result. 1 of 8 categories are comparable. 21 results are unique to DeepSeek V4 Flash; 1 to o1-pro.
Updated July 23, 2026- Shared results
- 1
- DeepSeek V4 Flash only
- 21
- o1-pro only
- 1
- Comparable categories
- 1 / 8
Pick DeepSeek V4 Flash if you want the stronger benchmark profile. o1-pro only becomes the better choice if knowledge is the priority or you want the stronger reasoning-first profile.
Confidence note. This is a partial-evidence comparison with 1 shared benchmark result 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 is clearly ahead on the BenchAlign aggregate, 58.88 to 45.94. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
o1-pro is also the more expensive model on tokens at $150.00 input / $600.00 output per 1M tokens, versus $0.14 input / $0.28 output per 1M tokens for DeepSeek V4 Flash. That is roughly 2142.9x on output cost alone. o1-pro is the reasoning model in the pair, while DeepSeek V4 Flash 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. DeepSeek V4 Flash gives you the larger context window at 1M, compared with 200K for o1-pro.
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 | Δ | o1-pro |
|---|---|---|---|
| Knowledge | DeepSeek V4 Flash38.8 | Margin→ 40.2 | o1-pro79.0 |
| Agentic | DeepSeek V4 Flash49.1 | MarginNo overlap | o1-proNot measured |
| Coding | DeepSeek V4 Flash64.2 | MarginNo overlap | o1-proNot measured |
| Math | DeepSeek V4 Flash40.8 | MarginNo overlap | o1-proNot measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
GPQA
KnowledgeA 71.2%B 79%Winner: o1-proΔ 7.8GPQA: DeepSeek V4 Flash scored 71.2%; o1-pro scored 79%. o1-pro wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | DeepSeek V4 Flash | o1-pro | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | DeepSeek V4 Flash$0.14 input / $0.28 output | o1-pro$150 input / $600 output | DeepSeek V4 Flash has the lower combined listed price. |
| Generation speedtokens per second | DeepSeek V4 FlashNot available | o1-proNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | DeepSeek V4 FlashNot available | o1-proNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | DeepSeek V4 Flash1M | o1-pro200K | DeepSeek V4 Flash lists the larger context window. |
Benchmark Deep Dive
Agentic5 benchmarks
Coding4 benchmarks
Reasoning2 benchmarks
Knowledgeo1-pro wins7 benchmarks
| Benchmark | DeepSeek V4 Flash | o1-pro | Result |
|---|---|---|---|
| MMLU-ProSource | 83% | — | Not comparable |
| SimpleQASource | 23.1% | — | Not comparable |
| Chinese-SimpleQASource | 71.5% | — | Not comparable |
| GPQASource | 71.2% | 79% | o1-pro leads |
| GPQA-DSource | 71.2% | — | Not comparable |
| HLESource | 8.1% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | — | 18.9% | Not comparable |
Math4 benchmarks
Multimodal1 benchmarks
| Benchmark | DeepSeek V4 Flash | o1-pro | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1238 | — | Not comparable |
Frequently Asked Questions (2)
Which is better, DeepSeek V4 Flash or o1-pro?
DeepSeek V4 Flash is ahead on BenchLM's BenchAlign leaderboard, 58.88 to 45.94. The biggest single separator in this matchup is GPQA, where the scores are 71.2% and 79%.
Which is better for knowledge tasks, DeepSeek V4 Flash or o1-pro?
o1-pro has the edge for knowledge tasks in this comparison, averaging 79 versus 38.8. Inside this category, GPQA is the benchmark that creates the most daylight between them.
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