Model comparison
Kimi K2 vs Nemotron 3 Ultra
Head-to-head evidence from 13 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: Kimi K2 unranked; Nemotron 3 Ultra #24
BenchAlign evidence: Kimi K2 supported; Nemotron 3 Ultra not scored. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Kimi K2 and Nemotron 3 Ultra share 13 comparable benchmark results. 0 of 8 categories are comparable. 2 results are unique to Kimi K2; 26 to Nemotron 3 Ultra.
Updated July 16, 2026- Shared results
- 13
- Kimi K2 only
- 2
- Nemotron 3 Ultra only
- 26
- Comparable categories
- 0 / 8
Benchmark data for Kimi K2 and Nemotron 3 Ultra is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 13 shared benchmark results across 6 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.
Kimi K2 is priced at $0.60 input / $2.50 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Nemotron 3 Ultra. Nemotron 3 Ultra has the larger context window at 1M, compared with 128K for Kimi K2.
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 | Kimi K2 | Δ | Nemotron 3 Ultra |
|---|---|---|---|
| Agentic | Kimi K2Not measured | MarginNo overlap | Nemotron 3 Ultra51.3 |
| Coding | Kimi K2Not measured | MarginNo overlap | Nemotron 3 Ultra58.3 |
| Reasoning | Kimi K2Not measured | MarginNo overlap | Nemotron 3 Ultra61.9 |
| Knowledge | Kimi K2Not measured | MarginNo overlap | Nemotron 3 Ultra54.2 |
| Math | Kimi K216.1 | MarginNo overlap | Nemotron 3 UltraNot measured |
| Multilingual | Kimi K2Not measured | MarginNo overlap | Nemotron 3 Ultra83.0 |
| Inst. Following | Kimi K2Not measured | MarginNo overlap | Nemotron 3 Ultra81.7 |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Kimi K2 | Nemotron 3 Ultra | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Kimi K2$0.6 input / $2.5 output | Nemotron 3 Ultra$0 input / $0 output | Nemotron 3 Ultra has the lower combined listed price. |
| Generation speedtokens per second | Kimi K243 tok/s | Nemotron 3 UltraNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Kimi K21.51 s | Nemotron 3 UltraNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Kimi K2128K | Nemotron 3 Ultra1M | Nemotron 3 Ultra lists the larger context window. |
Benchmark Deep Dive
Agentic12 benchmarks
| Benchmark | Kimi K2 | Nemotron 3 Ultra | Result |
|---|---|---|---|
| τ²-bench resultsSource | 61.1% | 83.3% | Nemotron 3 Ultra leads |
| Terminal-Bench 2.0Source | — | 56.4% | Not comparable |
| PinchBenchSource | — | 90.0% | Not comparable |
| BrowseCompSource | — | 44.4% | Not comparable |
| τ³-bench resultsSource | — | 70.9% | Not comparable |
| GDPval-AASource | — | 33.2% | Not comparable |
| HLE w/ toolsSource | — | 37.4% | Not comparable |
| AA Agentic IndexSource | — | 27.4% | Not comparable |
| GDPval-AASource | — | 1164 | Not comparable |
| AA BriefcaseSource | — | 870 | Not comparable |
| AA EnterpriseOps-GymSource | — | 28.9% | Not comparable |
| AA Harvey LABSource | — | 3.3% | Not comparable |
Coding8 benchmarks
| Benchmark | Kimi K2 | Nemotron 3 Ultra | Result |
|---|---|---|---|
| Terminal-Bench HardSource | 15.9% | 36.4% | Nemotron 3 Ultra leads |
| AA-SciCodeSource | 34.5% | 39.9% | Nemotron 3 Ultra leads |
| SWE-bench VerifiedSource | — | 71.9% | Not comparable |
| SWE MultilingualSource | — | 67.7% | Not comparable |
| LiveCodeBench v6Source | — | 89.0% | Not comparable |
| SciCodeSource | — | 44.6% | Not comparable |
| Terminal-Bench 2.0Source | — | 56.4% | Not comparable |
| AA Coding IndexSource | — | 49.3% | Not comparable |
Reasoning3 benchmarks
Knowledge12 benchmarks
| Benchmark | Kimi K2 | Nemotron 3 Ultra | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 19.4% | 37.8% | Nemotron 3 Ultra leads |
| AA-GPQA DiamondSource | 76.6% | 86.7% | Nemotron 3 Ultra leads |
| AA-HLESource | 7.0% | 26.6% | Nemotron 3 Ultra leads |
| AA-Omniscience IndexSource | -27.5% | -0.8% | Nemotron 3 Ultra leads |
| AA-Omniscience AccuracySource | 26.8% | 21.6% | Kimi K2 leads |
| AA-Omniscience Hallucination RateSource | 74.2% | 28.5% | Nemotron 3 Ultra leads |
| GPQASource | — | 87% | Not comparable |
| GPQA-DSource | — | 87.0% | Not comparable |
| HLESource | — | 26.7% | Not comparable |
| HLE w/o toolsSource | — | 26.7% | Not comparable |
| MMLU-ProSource | — | 86.8% | Not comparable |
| AA Openness IndexSource | — | 83.3% | Not comparable |
Math2 benchmarks
Multilingual1 benchmarks
| Benchmark | Kimi K2 | Nemotron 3 Ultra | Result |
|---|---|---|---|
| MMLU-ProXSource | — | 83% | Not comparable |
Multimodal1 benchmarks
| Benchmark | Kimi K2 | Nemotron 3 Ultra | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1085 | 1132 | Nemotron 3 Ultra leads |
Frequently Asked Questions (3)
Can I compare Kimi K2 and Nemotron 3 Ultra 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 Kimi K2 and Nemotron 3 Ultra today?
Kimi K2: $0.60 input / $2.50 output per 1M tokens Nemotron 3 Ultra: $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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