Nvidia Nemotron 3 Ultra 550B Thinking
Nvidia's Nemotron 3 Ultra 550B A55B model from the Nemotron 3 family. It uses a hybrid Mamba-Transformer MoE architecture. Provider-specific context limits vary, with the longest current route supporting up to 1M context. Thinking enabled.
- Reasoning
- Tool Calling
- Parallel Tool Calls
Added Jun 4, 2026
Model weightsPricing
Auto routing · per 1M tokens- Input
- $0.50
- Output
- $2.50
- Cache read
- $0.15
Specifications
- Context window
- 1M
- Max output
- 65.5K
- Parameters
- 550B / 55B
- Total / active
- Avg output (7d)
- 1.2K tokens
- Longer than 75% of models
Benchmarks
Benchmarks
Sourced from LMArena.
Arena Score
1426.4
Overall Rank
#122 / 421
Votes
11,399
Confidence Interval
1419.5 - 1433.3
Category Scores
Coding
#124 / 416
3,148 votes
1473.7
Math
#90 / 404
575 votes
1442.7
Longer Query
#128 / 399
5,233 votes
1432.7
Creative Writing
#145 / 419
2,153 votes
1382.3
Instruction Following
#143 / 421
3,843 votes
1405.6
Hard Prompts
#130 / 421
7,487 votes
1443.9
Additional Categories21
German
#84 / 320
210 votes
1446.6
Industry Mathematical
#89 / 401
706 votes
1451.4
Expert
#101 / 371
1,221 votes
1466.9
French
#111 / 301
458 votes
1448.0
Spanish
#112 / 303
453 votes
1427.4
Chinese
#118 / 395
719 votes
1465.5
Industry Life And Physical And Social Science
#119 / 419
1,856 votes
1446.7
English
#122 / 421
5,298 votes
1438.9
Exclude Ties
#123 / 421
8,662 votes
1417.2
Industry Software And It Services
#124 / 421
4,364 votes
1463.8
Non English
#132 / 421
6,100 votes
1406.3
Industry Business And Management And Financial Operations
#135 / 414
2,253 votes
1418.3
Industry Legal And Government
#135 / 393
950 votes
1428.1
Hard Prompts English
#138 / 419
3,617 votes
1446.4
Industry Medicine And Healthcare
#139 / 390
840 votes
1434.7
Industry Writing And Literature And Language
#143 / 420
3,004 votes
1392.4
Russian
#144 / 385
1,174 votes
1405.3
Industry Entertainment And Sports And Media
#145 / 419
2,597 votes
1380.1
Korean
#146 / 289
203 votes
1349.0
Multi Turn
#174 / 419
1,761 votes
1396.7
Polish
#189 / 244
226 votes
1349.2
Published 2026-11-09 · Matched as NVIDIA-Nemotron-3-Ultra-550B-A55B (NVFP4) · CC BY 4.0
LMArena DatasetLeaderboard results
These leaderboards tested Nvidia Nemotron 3 Ultra 550B, another version of this model.
| Benchmark | Score | Rank on NanoGPT |
|---|---|---|
Epoch AI Benchmarking Hub Epoch AI data, CC BY 4.0 · Updated Nov 12, 2026 | ||
GPQA Diamond | 85.4% | #67 of 119 |
OTIS Mock AIME 2024–2025 | 86.7% | #66 of 121 |
Mystery Game Puzzles | 20.0% | #48 of 77 |
Filtered and ranked to models on NanoGPT.
Providers
Choose or restrict providers with the API. Provider-selection prices include the selection markup. Provider selection guide · Pricing API (JSON, USD per 1K tokens)
 | $0.50 | $2.50 | $0.15 | N/A | N/A |
| $0.50 | $2.50 | $0.15 | N/A | N/A |
| $0.105 | $3.15 | $0.105 | N/A | N/A | |
| $0.525 | $2.31 | $0.105 | N/A | N/A | |
| $0.63 | $3.78 | $0.21 | N/A | N/A | |
| $0.689 | $3.45 | N/A | N/A | N/A |
Batch rows for this model use normal routing and cost the same as standard API requests. Set provider in a row to choose a provider.