Model comparison
DeepSeek V3.1 vs Nemotron Ultra 253B
Head-to-head evidence from 11 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: DeepSeek V3.1 #95 (Supported); Nemotron Ultra 253B #150 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. DeepSeek V3.1 and Nemotron Ultra 253B share 11 comparable benchmark results. 0 of 8 categories are comparable. 1 result is unique to DeepSeek V3.1; 0 to Nemotron Ultra 253B.
Updated July 20, 2026- Shared results
- 11
- DeepSeek V3.1 only
- 1
- Nemotron Ultra 253B only
- 0
- Comparable categories
- 0 / 8
Benchmark data for DeepSeek V3.1 and Nemotron Ultra 253B is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 11 shared benchmark results across 5 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 has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
DeepSeek V3.1 has the larger context window at 128K, compared with 32K for Nemotron Ultra 253B.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | DeepSeek V3.1 | Nemotron Ultra 253B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | DeepSeek V3.1$0 input / $0 output | Nemotron Ultra 253B$0 input / $0 output | Listed prices are equal. |
| Generation speedtokens per second | DeepSeek V3.1Not available | Nemotron Ultra 253BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | DeepSeek V3.1Not available | Nemotron Ultra 253BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | DeepSeek V3.1128K | Nemotron Ultra 253B32K | DeepSeek V3.1 lists the larger context window. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | DeepSeek V3.1 | Nemotron Ultra 253B | Result |
|---|---|---|---|
| τ²-bench resultsSource | 34.8% | 11.4% | DeepSeek V3.1 leads |
Coding1 benchmarks
| Benchmark | DeepSeek V3.1 | Nemotron Ultra 253B | Result |
|---|---|---|---|
| AA-SciCodeSource | 36.7% | 34.7% | DeepSeek V3.1 leads |
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | DeepSeek V3.1 | Nemotron Ultra 253B | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 21.1% | 9.1% | DeepSeek V3.1 leads |
| AA-GPQA DiamondSource | 73.5% | 72.8% | DeepSeek V3.1 leads |
| AA-HLESource | 6.3% | 8.1% | Nemotron Ultra 253B leads |
| AA-Omniscience IndexSource | -41.1% | -45.5% | DeepSeek V3.1 leads |
| AA-Omniscience AccuracySource | 23.1% | 19.9% | DeepSeek V3.1 leads |
| AA-Omniscience Hallucination RateSource | 83.5% | 81.7% | Nemotron Ultra 253B leads |
Multimodal1 benchmarks
| Benchmark | DeepSeek V3.1 | Nemotron Ultra 253B | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1155 | — | Not comparable |
Inst. Following1 benchmarks
| Benchmark | DeepSeek V3.1 | Nemotron Ultra 253B | Result |
|---|---|---|---|
| AA-IFBenchSource | 37.8% | 38.2% | Nemotron Ultra 253B leads |
Frequently Asked Questions (3)
Can I compare DeepSeek V3.1 and Nemotron Ultra 253B 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 DeepSeek V3.1 and Nemotron Ultra 253B today?
DeepSeek V3.1: $0.00 input / $0.00 output per 1M tokens Nemotron Ultra 253B: $0.00 input / $0.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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.