Model comparison
DeepSeekMath V2 vs Step 3.5 Flash
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: DeepSeekMath V2 #124 (Estimated); Step 3.5 Flash #90 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. DeepSeekMath V2 and Step 3.5 Flash share 0 comparable benchmark results. 0 of 8 categories are comparable. 0 results are unique to DeepSeekMath V2; 0 to Step 3.5 Flash.
Updated July 28, 2026- Shared results
- 0
- DeepSeekMath V2 only
- 0
- Step 3.5 Flash only
- 0
- Comparable categories
- 0 / 8
Benchmark data for DeepSeekMath V2 and Step 3.5 Flash is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM does not have sourced benchmark coverage for DeepSeekMath V2 and Step 3.5 Flash yet. This comparison is currently limited to metadata such as context window, reasoning mode, and pricing where available.
Step 3.5 Flash is priced at $0.10 input / $0.30 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for DeepSeekMath V2. Step 3.5 Flash has the larger context window at 256K, compared with 128K for DeepSeekMath V2.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | DeepSeekMath V2 | Step 3.5 Flash | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | DeepSeekMath V2$0 input / $0 output | Step 3.5 Flash$0.1 input / $0.3 output | DeepSeekMath V2 has the lower combined listed price. |
| Generation speedtokens per second | DeepSeekMath V2Not available | Step 3.5 Flash87 tok/s | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | DeepSeekMath V2Not available | Step 3.5 Flash3.03 s | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | DeepSeekMath V2128K | Step 3.5 Flash256K | Step 3.5 Flash lists the larger context window. |
Benchmark Deep Dive
Frequently Asked Questions (3)
Can I compare DeepSeekMath V2 and Step 3.5 Flash on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for DeepSeekMath V2 and Step 3.5 Flash today?
DeepSeekMath V2: $0.00 input / $0.00 output per 1M tokens Step 3.5 Flash: $0.10 input / $0.30 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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