Model comparison
MiMo-V2-Flash 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: MiMo-V2-Flash #91 (Supported); Nemotron Ultra 253B #150 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. MiMo-V2-Flash and Nemotron Ultra 253B share 11 comparable benchmark results. 0 of 8 categories are comparable. 8 results are unique to MiMo-V2-Flash; 0 to Nemotron Ultra 253B.
Updated July 22, 2026- Shared results
- 11
- MiMo-V2-Flash only
- 8
- Nemotron Ultra 253B only
- 0
- Comparable categories
- 0 / 8
Benchmark data for MiMo-V2-Flash 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.
MiMo-V2-Flash has the larger context window at 256K, 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.
| Category | MiMo-V2-Flash | Δ | Nemotron Ultra 253B |
|---|---|---|---|
| Coding | MiMo-V2-Flash73.4 | MarginNo overlap | Nemotron Ultra 253BNot measured |
| Knowledge | MiMo-V2-Flash84.7 | MarginNo overlap | Nemotron Ultra 253BNot measured |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | MiMo-V2-Flash | Nemotron Ultra 253B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | MiMo-V2-Flash$0 input / $0 output | Nemotron Ultra 253B$0 input / $0 output | Listed prices are equal. |
| Generation speedtokens per second | MiMo-V2-Flash129 tok/s | Nemotron Ultra 253BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | MiMo-V2-Flash2.14 s | Nemotron Ultra 253BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | MiMo-V2-Flash256K | Nemotron Ultra 253B32K | MiMo-V2-Flash lists the larger context window. |
Benchmark Deep Dive
Agentic4 benchmarks
Coding3 benchmarks
Reasoning2 benchmarks
Knowledge8 benchmarks
| Benchmark | MiMo-V2-Flash | Nemotron Ultra 253B | Result |
|---|---|---|---|
| GPQASource | 83.7% | — | Not comparable |
| MMLU-ProSource | 84.9% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 24.7% | 9.1% | MiMo-V2-Flash leads |
| AA-GPQA DiamondSource | 65.6% | 72.8% | Nemotron Ultra 253B leads |
| AA-HLESource | 8.0% | 8.1% | Nemotron Ultra 253B leads |
| AA-Omniscience IndexSource | -48.5% | -45.5% | Nemotron Ultra 253B leads |
| AA-Omniscience AccuracySource | 15.2% | 19.9% | Nemotron Ultra 253B leads |
| AA-Omniscience Hallucination RateSource | 75.1% | 81.7% | MiMo-V2-Flash leads |
Math1 benchmarks
| Benchmark | MiMo-V2-Flash | Nemotron Ultra 253B | Result |
|---|---|---|---|
| AIME 2025Source | 94.1% | — | Not comparable |
Inst. Following1 benchmarks
| Benchmark | MiMo-V2-Flash | Nemotron Ultra 253B | Result |
|---|---|---|---|
| AA-IFBenchSource | 39.9% | 38.2% | MiMo-V2-Flash leads |
Frequently Asked Questions (3)
Can I compare MiMo-V2-Flash 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 MiMo-V2-Flash and Nemotron Ultra 253B today?
MiMo-V2-Flash: $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.
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