Nemotron 3 Ultra vs Beam 1.0 501B A23B
Beam 1.0 501B A23B costs 2.0x less per output token than Nemotron 3 Ultra ($1.20 vs $2.40 per million). Updated October 23, 2026; 25 benchmarks have a result for both.
Nemotron 3 Ultra or Beam 1.0 501B A23B: which to pick
Only Nemotron 3 Ultra has a coding score, 30.0 on the Vibe Coding Index; Beam 1.0 501B A23B has none, so the two cannot be ranked on coding.
Pick Beam 1.0 501B A23B for output tokens 2.0x cheaper ($1.20 vs $2.40 per million) and a larger context window (1.05M against 262K tokens).
- Shared results
- 25
- Nemotron 3 Ultra only
- 46
- Beam 1.0 501B A23B only
- 3
- Like-for-like categories
- 6 of 9
Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
No call
Only Nemotron 3 Ultra has a coding score, so no call is made.
One side not measured
Intelligence
AA Intelligence Index
No call
Only Nemotron 3 Ultra has a AA Intelligence Index result, 22.9.
Directional only
Agentic work
AA Agentic Index
No call
Only Nemotron 3 Ultra has a AA Agentic Index result, 20.1.
Directional only
Reasoning
GPQA Diamond
No call
Only Nemotron 3 Ultra has a GPQA Diamond result, 86.1%.
Directional only
Knowledge
MMLU Pro
No call
Only Nemotron 3 Ultra has a MMLU Pro result, 85.8%.
Directional only
Web design
Design Arena: websites
Beam 1.0 501B A23B
Beam 1.0 501B A23B leads, 1247 against 1145.
Same board, both measured
Long documents
Listed context window
Beam 1.0 501B A23B
Beam 1.0 501B A23B takes 1.05M tokens against 262K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Beam 1.0 501B A23B
Nemotron 3 Ultra $0.0018, Beam 1.0 501B A23B $0.0010 per turn.
List prices
At a glance
- Coding index
- Nemotron 3 Ultra 30.0 from 3 benchmarks, Beam 1.0 501B A23B not benchmarked.
- Widest category
- Web design, 11.0 points apart on average over 2 shared benchmarks.
- Widest single gap
- LMArena Text: medicine and healthcare: Nemotron 3 Ultra 1455 against Beam 1.0 501B A23B 1378, 13.0 points apart on a 0 to 100 scale.
- Output price
- Nemotron 3 Ultra $2.40 against Beam 1.0 501B A23B $1.20 per million output tokens, 2.0x apart.
- Context window
- Nemotron 3 Ultra takes 262K tokens, Beam 1.0 501B A23B 1.05M.
Benchmark by benchmark
First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.
| Category | Nemotron 3 Ultra | Bars | Beam 1.0 501B A23B | Ties |
|---|---|---|---|---|
| Coding | 1 | 1 | ||
| Reasoning | 3 | 0 | ||
| Math | 0 | 2 | ||
| Knowledge | 4 | 0 | ||
| Web design | 0 | 2 | ||
| General | 9 | 3 | ||
| All shared boards | 17 | 8 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index11
| Benchmark | Nemotron 3 Ultra | Beam 1.0 501B A23B | Leader |
|---|---|---|---|
| LMArena WebDev | Not measured | 1436 | Only Beam 1.0 501B A23B measured |
| AA Coding Index | 49.3 | Not measured | Only Nemotron 3 Ultra measured |
| LiveCodeBench (Vals AI) | 86.0% | Not measured | Only Nemotron 3 Ultra measured |
| SWE-bench Verified (Vals AI) | 69.0% | Not measured | Only Nemotron 3 Ultra measured |
| Vibe Code Bench (Vals AI) | 7.6% | Not measured | Only Nemotron 3 Ultra measured |
| Code migration (Vals AI) | 4.9% | Not measured | Only Nemotron 3 Ultra measured |
| ProgramBench (Vals AI) | 0.0% | Not measured | Only Nemotron 3 Ultra measured |
| Terminal-Bench 2.1 (Vals AI) | 50.9% | Not measured | Only Nemotron 3 Ultra measured |
| SciCode | 40.3% | Not measured | Only Nemotron 3 Ultra measured |
| Terminal-Bench Hard (Artificial Analysis run) | 36.4% | Not measured | Only Nemotron 3 Ultra measured |
| FrontierCode | 13.6% | Not measured | Only Nemotron 3 Ultra measured |
| WeirdML | 43.5% | Not measured | Only Nemotron 3 Ultra measured |
| LMArena Text: coding | 1467 | 1472 | Beam 1.0 501B A23B |
| LMArena Text: software and IT | 1468 | 1461 | Nemotron 3 Ultra |
| LMArena WebDev: React | Not measured | 1441 | Only Beam 1.0 501B A23B measured |
| LMArena WebDev: HTML | Not measured | 1438 | Only Beam 1.0 501B A23B measured |
| Neither model has a result on the other 27 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
| Benchmark | Nemotron 3 Ultra | Beam 1.0 501B A23B | Leader |
|---|---|---|---|
| AA Intelligence Index | 22.9 | Not measured | Only Nemotron 3 Ultra measured |
| Epoch Capabilities Index | 146.0 | Not measured | Only Nemotron 3 Ultra measured |
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index7 boards, none shared
| Benchmark | Nemotron 3 Ultra | Beam 1.0 501B A23B | Leader |
|---|---|---|---|
| AA Agentic Index | 20.1 | Not measured | Only Nemotron 3 Ultra measured |
| Finance Agent (Vals AI) | 37.7% | Not measured | Only Nemotron 3 Ultra measured |
| Legal Research Bench (Vals AI) | 15.4% | Not measured | Only Nemotron 3 Ultra measured |
| Excel Modeling Benchmark (Vals AI) | 31.7% | Not measured | Only Nemotron 3 Ultra measured |
| τ²-Bench Telecom | 83.3% | Not measured | Only Nemotron 3 Ultra measured |
| APEX-Agents | 22.7% | Not measured | Only Nemotron 3 Ultra measured |
| MCP Atlas | 63.1% | Not measured | Only Nemotron 3 Ultra measured |
| Neither model has a result on the other 35 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index30
| Benchmark | Nemotron 3 Ultra | Beam 1.0 501B A23B | Leader |
|---|---|---|---|
| GPQA Diamond | 86.1% | Not measured | Only Nemotron 3 Ultra measured |
| GPQA Diamond (Artificial Analysis run) | 86.7% | Not measured | Only Nemotron 3 Ultra measured |
| Humanity's Last Exam (Artificial Analysis run) | 28.4% | Not measured | Only Nemotron 3 Ultra measured |
| GPQA Diamond (Epoch AI run) | 85.4% | Not measured | Only Nemotron 3 Ultra measured |
| Mystery game puzzles | 20.0% | Not measured | Only Nemotron 3 Ultra measured |
| LMArena Text: hard prompts | 1452 | 1442 | Nemotron 3 Ultra |
| LMArena Text: expert | 1472 | 1447 | Nemotron 3 Ultra |
| LMArena Text: hard prompts in English | 1453 | 1452 | Nemotron 3 Ultra |
| Neither model has a result on the other 15 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index02
| Benchmark | Nemotron 3 Ultra | Beam 1.0 501B A23B | Leader |
|---|---|---|---|
| OTIS Mock AIME | 86.7% | Not measured | Only Nemotron 3 Ultra measured |
| ProofBench | 2.0% | Not measured | Only Nemotron 3 Ultra measured |
| LMArena Text: math | 1457 | 1460 | Beam 1.0 501B A23B |
| LMArena Text: mathematical work | 1462 | 1474 | Beam 1.0 501B A23B |
| Neither model has a result on the other 10 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | Nemotron 3 Ultra | Beam 1.0 501B A23B | Leader |
|---|---|---|---|
| MMLU Pro | 85.8% | Not measured | Only Nemotron 3 Ultra measured |
| LegalBench (Vals AI) | 82.1% | Not measured | Only Nemotron 3 Ultra measured |
| CorpFin (Vals AI) | 65.5% | Not measured | Only Nemotron 3 Ultra measured |
| TaxEval (Vals AI) | 73.1% | Not measured | Only Nemotron 3 Ultra measured |
| MedCode (Vals AI) | 38.6% | Not measured | Only Nemotron 3 Ultra measured |
| LMArena Text: science | 1465 | 1431 | Nemotron 3 Ultra |
| LMArena Text: medicine and healthcare | 1455 | 1378 | Nemotron 3 Ultra |
| LMArena Text: legal and government | 1453 | 1431 | Nemotron 3 Ultra |
| LMArena Text: business and finance | 1435 | 1430 | Nemotron 3 Ultra |
| Neither model has a result on the other 11 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index02
| Benchmark | Nemotron 3 Ultra | Beam 1.0 501B A23B | Leader |
|---|---|---|---|
| Design Arena: websites | 1145 | 1247 | Beam 1.0 501B A23B |
| Design Arena: UI components | 1135 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: game dev | 1138 | 1212 | Beam 1.0 501B A23B |
| Design Arena: data viz | 1142 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: 3D | 1132 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: all code categories | 1146 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: SVG | 1069 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: ASCII art | 1100 | Not measured | Only Nemotron 3 Ultra measured |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index93
| Benchmark | Nemotron 3 Ultra | Beam 1.0 501B A23B | Leader |
|---|---|---|---|
| IFBench | 81.4% | Not measured | Only Nemotron 3 Ultra measured |
| Long context reasoning (AA-LCR) | 79.3% | Not measured | Only Nemotron 3 Ultra measured |
| DTBench | 90.1% | Not measured | Only Nemotron 3 Ultra measured |
| LMCA | 36.9% | Not measured | Only Nemotron 3 Ultra measured |
| LMArena Text | 1445 | 1426 | Nemotron 3 Ultra |
| LMArena Text: instruction following | 1418 | 1431 | Beam 1.0 501B A23B |
| LMArena Text: creative writing | 1398 | 1391 | Nemotron 3 Ultra |
| LMArena Text: English | 1454 | 1437 | Nemotron 3 Ultra |
| LMArena Text: non-English | 1427 | 1412 | Nemotron 3 Ultra |
| LMArena Text: Chinese | 1498 | 1428 | Nemotron 3 Ultra |
| LMArena Text: German | 1474 | Not measured | Only Nemotron 3 Ultra measured |
| LMArena Text: Korean | 1385 | Not measured | Only Nemotron 3 Ultra measured |
| LMArena Text: French | 1473 | 1461 | Nemotron 3 Ultra |
| LMArena Text: Spanish | 1454 | Not measured | Only Nemotron 3 Ultra measured |
| LMArena Text: Russian | 1417 | 1411 | Nemotron 3 Ultra |
| LMArena Text: Polish | 1385 | Not measured | Only Nemotron 3 Ultra measured |
| LMArena Text: multi-turn | 1411 | 1416 | Beam 1.0 501B A23B |
| LMArena Text: longer queries | 1437 | 1429 | Nemotron 3 Ultra |
| LMArena Text: writing and language | 1405 | 1401 | Nemotron 3 Ultra |
| LMArena Text: entertainment and media | 1397 | 1400 | Beam 1.0 501B A23B |
| Neither model has a result on the other 28 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Nemotron 3 Ultra | Beam 1.0 501B A23B | Leader |
|---|---|---|---|
| Neither model has a result on 5 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Beam 1.0 501B A23B costs less
Repository review
50K input + 3K output tokens
Beam 1.0 501B A23B costs less
Agent loop
200K input + 10K output tokens
Beam 1.0 501B A23B costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | NVIDIA Nemotron 3 Ultra | Reflection Beam 1.0 501B A23B |
|---|---|---|
| Maker | NVIDIA | Reflection |
| Weights | Open weights | Open weights |
| Released | June 4, 2026 | October 16, 2026 |
| Context window | 262K | 1.05M |
| Input $/Mtok | $0.60 | $0.40 |
| Output $/Mtok | $2.40 | $1.20 |
| Coding index | 30.0 | Not benchmarked |
| Independent measurements behind it | 3 | 1 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Nemotron 3 Ultra better than Beam 1.0 501B A23B for coding?
Only Nemotron 3 Ultra has a coding score, 30.0 on the Vibe Coding Index; Beam 1.0 501B A23B has none, so the two cannot be ranked on coding. Pick Beam 1.0 501B A23B for output tokens 2.0x cheaper ($1.20 vs $2.40 per million) and a larger context window (1.05M against 262K tokens).
Which is cheaper, Nemotron 3 Ultra or Beam 1.0 501B A23B?
Nemotron 3 Ultra costs $0.60 per million input tokens and $2.40 per million output tokens; Beam 1.0 501B A23B costs $0.40 and $1.20. Cost per solved task is known for neither of them.
Which has the bigger context window, Nemotron 3 Ultra or Beam 1.0 501B A23B?
Beam 1.0 501B A23B, with 1.05M tokens against 262K.
How many benchmarks is the Nemotron 3 Ultra vs Beam 1.0 501B A23B comparison based on?
25 benchmarks have a result for both models as of October 23, 2026. Nemotron 3 Ultra's coding index rests on 3 independent benchmarks and Beam 1.0 501B A23B's on 1. Where only one model has a result, the page says so instead of naming a winner.