Model comparison
Inkling vs Nemotron Ultra 253B
Head-to-head evidence from 9 shared benchmark results across 3 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: Inkling #17; Nemotron Ultra 253B unranked
BenchAlign evidence: Inkling not scored; Nemotron Ultra 253B estimated. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Inkling and Nemotron Ultra 253B share 9 comparable benchmark results. 0 of 8 categories are comparable. 23 results are unique to Inkling; 3 to Nemotron Ultra 253B.
Updated July 16, 2026- Shared results
- 9
- Inkling only
- 23
- Nemotron Ultra 253B only
- 3
- Comparable categories
- 0 / 8
Benchmark data for Inkling and Nemotron Ultra 253B is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 9 shared benchmark results across 3 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.
Inkling is priced at $1.87 input / $4.68 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Nemotron Ultra 253B. Inkling has the larger context window at 1M, 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 | Inkling | Δ | Nemotron Ultra 253B |
|---|---|---|---|
| Agentic | Inkling69.4 | MarginNo overlap | Nemotron Ultra 253BNot measured |
| Coding | Inkling68.6 | MarginNo overlap | Nemotron Ultra 253BNot measured |
| Knowledge | Inkling51.7 | MarginNo overlap | Nemotron Ultra 253BNot measured |
| Math | Inkling97.1 | MarginNo overlap | Nemotron Ultra 253BNot measured |
| Multimodal | Inkling76.5 | MarginNo overlap | Nemotron Ultra 253BNot measured |
| Inst. Following | Inkling79.8 | MarginNo overlap | Nemotron Ultra 253BNot measured |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Inkling | Nemotron Ultra 253B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Inkling$1.87 input / $4.68 output | Nemotron Ultra 253B$0 input / $0 output | Nemotron Ultra 253B has the lower combined listed price. |
| Generation speedtokens per second | InklingNot available | Nemotron Ultra 253BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | InklingNot available | Nemotron Ultra 253BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Inkling1M | Nemotron Ultra 253B32K | Inkling lists the larger context window. |
Benchmark Deep Dive
Agentic10 benchmarks
| Benchmark | Inkling | Nemotron Ultra 253B | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 63.8% | — | Not comparable |
| BrowseCompSource | 77.1% | — | Not comparable |
| MCP AtlasSource | 74.1% | — | Not comparable |
| Design Arena Agentic Web DevSource | 1258 | — | Not comparable |
| AA Agentic IndexSource | 32.3% | — | Not comparable |
| GDPval-AASource | 36.9% | — | Not comparable |
| GDPval-AASource | 1239 | — | Not comparable |
| AA BriefcaseSource | 836 | — | Not comparable |
| AA Tau3 BankingSource | 23.7% | — | Not comparable |
| τ²-bench resultsSource | — | 11.4% | Not comparable |
Coding6 benchmarks
Reasoning2 benchmarks
Knowledge10 benchmarks
| Benchmark | Inkling | Nemotron Ultra 253B | Result |
|---|---|---|---|
| GPQASource | 87.9% | — | Not comparable |
| GPQA-DSource | 87.9% | — | Not comparable |
| HLESource | 46% | — | Not comparable |
| HLE w/o toolsSource | 30% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 40.7% | 9.1% | Inkling leads |
| AA-GPQA DiamondSource | 87.2% | 72.8% | Inkling leads |
| AA-HLESource | 29.7% | 8.1% | Inkling leads |
| AA-Omniscience IndexSource | 2.1% | -45.5% | Inkling leads |
| AA-Omniscience AccuracySource | 40.0% | 19.9% | Inkling leads |
| AA-Omniscience Hallucination RateSource | 63.1% | 81.7% | Inkling leads |
Math1 benchmarks
| Benchmark | Inkling | Nemotron Ultra 253B | Result |
|---|---|---|---|
| AIME26Source | 97.1% | — | Not comparable |
Multimodal4 benchmarks
Frequently Asked Questions (3)
Can I compare Inkling 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 Inkling and Nemotron Ultra 253B today?
Inkling: $1.87 input / $4.68 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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