Claude Haiku 5.5 vs Nemotron 3 Ultra
Claude Haiku 5.5 leads Nemotron 3 Ultra on coding, 70.7 to 30.0 on the Vibe Coding Index, and Claude Haiku 5.5 costs 4.8x less per output token ($0.50 vs $2.40 per million). Updated October 23, 2026; 50 benchmarks have a result for both.
Claude Haiku 5.5 or Nemotron 3 Ultra: which to pick
Pick Claude Haiku 5.5 for coding: it scores 70.7 on the Vibe Coding Index against 30.0 for Nemotron 3 Ultra.
Pick Nemotron 3 Ultra for work measured by LMArena Text: coding or LMArena Text: software and IT, where it leads.
- Shared results
- 50
- Claude Haiku 5.5 only
- 39
- Nemotron 3 Ultra only
- 21
- Like-for-like categories
- 8 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
Claude Haiku 5.5
Claude Haiku 5.5 scores 70.7 against 30.0.
5 and 3 benchmarks behind the scores
Intelligence
AA Intelligence Index
Claude Haiku 5.5
Claude Haiku 5.5 leads, 43.4 against 22.9.
Same board, both measured
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
Claude Haiku 5.5
Claude Haiku 5.5 leads, 1262 against 1145.
Same board, both measured
General
Vals Index
No call
Only Claude Haiku 5.5 has a Vals Index result, 58.7%.
Directional only
Long documents
Listed context window
Claude Haiku 5.5
Claude Haiku 5.5 takes 1M tokens against 262K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Claude Haiku 5.5
Claude Haiku 5.5 $0.0003, Nemotron 3 Ultra $0.0018 per turn.
List prices
At a glance
- Coding index
- Claude Haiku 5.5 70.7 from 5 benchmarks, Nemotron 3 Ultra 30.0 from 3 benchmarks.
- Widest category
- Coding, 28.1 points apart on average over 7 shared benchmarks.
- Widest single gap
- ProofBench: Claude Haiku 5.5 89.0% against Nemotron 3 Ultra 2.0%, 87.0 points apart on a 0 to 100 scale.
- Output price
- Claude Haiku 5.5 $0.50 against Nemotron 3 Ultra $2.40 per million output tokens, 4.8x apart.
- Context window
- Claude Haiku 5.5 takes 1M tokens, Nemotron 3 Ultra 262K.
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 | Claude Haiku 5.5 | Bars | Nemotron 3 Ultra | Ties |
|---|---|---|---|---|
| Coding | 5 | 2 | ||
| Intelligence | 2 | 0 | ||
| Agentic work | 4 | 0 | ||
| Reasoning | 3 | 3 | ||
| Math | 2 | 2 | ||
| Knowledge | 1 | 4 | ||
| Web design | 6 | 0 | ||
| General | 3 | 13 | ||
| All shared boards | 26 | 24 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index52
| Benchmark | Claude Haiku 5.5 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| LiveBench coding | 91.4% | Not measured | Only Claude Haiku 5.5 measured |
| LMArena WebDev | 1585 | Not measured | Only Claude Haiku 5.5 measured |
| AA Coding Index | Not measured | 49.3 | Only Nemotron 3 Ultra measured |
| LiveCodeBench (Vals AI) | Not measured | 86.0% | Only Nemotron 3 Ultra measured |
| SWE-bench Verified (Vals AI) | Not measured | 69.0% | Only Nemotron 3 Ultra measured |
| Terminal-Bench 4 (Vals AI) | 36.4% | Not measured | Only Claude Haiku 5.5 measured |
| Vibe Code Bench (Vals AI) | 90.4% | 7.6% | Claude Haiku 5.5 |
| Code migration (Vals AI) | 44.6% | 4.9% | Claude Haiku 5.5 |
| ProgramBench (Vals AI) | 2.5% | 0.0% | Claude Haiku 5.5 |
| IOI (Vals AI) | 47.3% | Not measured | Only Claude Haiku 5.5 measured |
| Terminal-Bench 2.1 (Vals AI) | Not measured | 50.9% | Only Nemotron 3 Ultra measured |
| SWE-bench Multimodal (Vals AI) | 44.0% | Not measured | Only Claude Haiku 5.5 measured |
| Vibe Code Bench 1-100 (Vals AI) | 20.4% | Not measured | Only Claude Haiku 5.5 measured |
| CyberBench (Vals AI) | 75.5% | Not measured | Only Claude Haiku 5.5 measured |
| SciCode | 55.0% | 40.3% | Claude Haiku 5.5 |
| Terminal-Bench Hard (Artificial Analysis run) | Not measured | 36.4% | Only Nemotron 3 Ultra measured |
| FrontierCode | 46.4% | 13.6% | Claude Haiku 5.5 |
| FrontierSWE | 43.8% | Not measured | Only Claude Haiku 5.5 measured |
| WeirdML | Not measured | 43.5% | Only Nemotron 3 Ultra measured |
| LMArena Text: coding | 1450 | 1467 | Nemotron 3 Ultra |
| LMArena Text: software and IT | 1446 | 1468 | Nemotron 3 Ultra |
| LMArena WebDev: React | 1606 | Not measured | Only Claude Haiku 5.5 measured |
| LMArena WebDev: HTML | 1565 | Not measured | Only Claude Haiku 5.5 measured |
| SciCode | 9.2% | Not measured | Only Claude Haiku 5.5 measured |
| SWE-Bench Pro V2 | 87.2% | Not measured | Only Claude Haiku 5.5 measured |
| Neither model has a result on the other 18 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Claude Haiku 5.5 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| AA Intelligence Index | 43.4 | 22.9 | Claude Haiku 5.5 |
| Epoch Capabilities Index | 159.3 | 146.0 | Claude Haiku 5.5 |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | Claude Haiku 5.5 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| AA Agentic Index | Not measured | 20.1 | Only Nemotron 3 Ultra measured |
| LiveBench research | 81.9% | Not measured | Only Claude Haiku 5.5 measured |
| LiveBench browser | 80.0% | Not measured | Only Claude Haiku 5.5 measured |
| LiveBench long agentic | 57.6% | Not measured | Only Claude Haiku 5.5 measured |
| SREBench (Vals AI) | 5.7% | Not measured | Only Claude Haiku 5.5 measured |
| Finance Agent (Vals AI) | 54.1% | 37.7% | Claude Haiku 5.5 |
| Tax Agent Bench (Vals AI) | 31.9% | Not measured | Only Claude Haiku 5.5 measured |
| Legal Research Bench (Vals AI) | 43.3% | 15.4% | Claude Haiku 5.5 |
| Harvey's Legal Agent Benchmark (Vals AI) | 4.2% | Not measured | Only Claude Haiku 5.5 measured |
| Excel Modeling Benchmark (Vals AI) | 59.0% | 31.7% | Claude Haiku 5.5 |
| BioMysteryBench (Vals AI) | 70.4% | Not measured | Only Claude Haiku 5.5 measured |
| Terminal-Bench-Science (Vals AI) | 10.0% | Not measured | Only Claude Haiku 5.5 measured |
| Vals Science Index | 38.5% | Not measured | Only Claude Haiku 5.5 measured |
| τ²-Bench Telecom | Not measured | 83.3% | Only Nemotron 3 Ultra measured |
| APEX-Agents | 56.1% | 22.7% | Claude Haiku 5.5 |
| Vending-Bench 2 | $3,602 | Not measured | Only Claude Haiku 5.5 measured |
| MCP Atlas | Not measured | 63.1% | Only Nemotron 3 Ultra measured |
| Neither model has a result on the other 25 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index33
| Benchmark | Claude Haiku 5.5 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| GPQA Diamond | Not measured | 86.1% | Only Nemotron 3 Ultra measured |
| LiveBench reasoning | 82.4% | Not measured | Only Claude Haiku 5.5 measured |
| MysteryMechanism (Vals AI) | 35.1% | Not measured | Only Claude Haiku 5.5 measured |
| GPQA Diamond (Artificial Analysis run) | Not measured | 86.7% | Only Nemotron 3 Ultra measured |
| Humanity's Last Exam (Artificial Analysis run) | 44.4% | 28.4% | Claude Haiku 5.5 |
| GPQA Diamond (Epoch AI run) | 89.6% | 85.4% | Claude Haiku 5.5 |
| ARC-AGI | 89.0% | Not measured | Only Claude Haiku 5.5 measured |
| ARC-AGI-2 | 61.3% | Not measured | Only Claude Haiku 5.5 measured |
| Chess puzzles | 55.0% | Not measured | Only Claude Haiku 5.5 measured |
| Mystery game puzzles | 30.0% | 20.0% | Claude Haiku 5.5 |
| EBR-bench | 43.8% | Not measured | Only Claude Haiku 5.5 measured |
| LMArena Text: hard prompts | 1421 | 1452 | Nemotron 3 Ultra |
| LMArena Text: expert | 1448 | 1472 | Nemotron 3 Ultra |
| LMArena Text: hard prompts in English | 1429 | 1453 | Nemotron 3 Ultra |
| Neither model has a result on the other 9 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index22
| Benchmark | Claude Haiku 5.5 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| OTIS Mock AIME | 98.9% | 86.7% | Claude Haiku 5.5 |
| FrontierMath, tiers 1 to 3 | 75.1% | Not measured | Only Claude Haiku 5.5 measured |
| FrontierMath, tier 4 | 46.3% | Not measured | Only Claude Haiku 5.5 measured |
| ProofBench | 89.0% | 2.0% | Claude Haiku 5.5 |
| LMArena Text: math | 1413 | 1457 | Nemotron 3 Ultra |
| LMArena Text: mathematical work | 1431 | 1462 | Nemotron 3 Ultra |
| Neither model has a result on the other 8 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index14
| Benchmark | Claude Haiku 5.5 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| MMLU Pro | Not measured | 85.8% | Only Nemotron 3 Ultra measured |
| LegalBench (Vals AI) | Not measured | 82.1% | Only Nemotron 3 Ultra measured |
| CorpFin (Vals AI) | Not measured | 65.5% | Only Nemotron 3 Ultra measured |
| TaxEval (Vals AI) | Not measured | 73.1% | Only Nemotron 3 Ultra measured |
| MedCode (Vals AI) | 51.5% | 38.6% | Claude Haiku 5.5 |
| SimpleQA Verified | 23.8% | Not measured | Only Claude Haiku 5.5 measured |
| LMArena Text: science | 1408 | 1465 | Nemotron 3 Ultra |
| LMArena Text: medicine and healthcare | 1372 | 1455 | Nemotron 3 Ultra |
| LMArena Text: legal and government | 1395 | 1453 | Nemotron 3 Ultra |
| LMArena Text: business and finance | 1406 | 1435 | Nemotron 3 Ultra |
| Neither model has a result on the other 10 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index60
| Benchmark | Claude Haiku 5.5 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| Design Arena: websites | 1262 | 1145 | Claude Haiku 5.5 |
| Design Arena: UI components | 1282 | 1135 | Claude Haiku 5.5 |
| Design Arena: game dev | 1315 | 1138 | Claude Haiku 5.5 |
| Design Arena: data viz | 1293 | 1142 | Claude Haiku 5.5 |
| Design Arena: 3D | 1342 | 1132 | Claude Haiku 5.5 |
| Design Arena: all code categories | 1277 | 1146 | Claude Haiku 5.5 |
| Design Arena: SVG | Not measured | 1069 | Only Nemotron 3 Ultra measured |
| Design Arena: ASCII art | Not measured | 1100 | Only Nemotron 3 Ultra measured |
| LiveBench design | 83.1% | Not measured | Only Claude Haiku 5.5 measured |
GeneralLike-for-likePublic boards, shown as published, kept out of the index313
| Benchmark | Claude Haiku 5.5 | Nemotron 3 Ultra | Leader |
|---|---|---|---|
| Vals Index | 58.7% | Not measured | Only Claude Haiku 5.5 measured |
| LiveBench data analysis | 53.1% | Not measured | Only Claude Haiku 5.5 measured |
| Public Benefits Bench (Vals AI) | 63.2% | Not measured | Only Claude Haiku 5.5 measured |
| SAGE (Vals AI) | 45.8% | Not measured | Only Claude Haiku 5.5 measured |
| MedScribe (Vals AI) | 89.5% | Not measured | Only Claude Haiku 5.5 measured |
| IFBench | Not measured | 81.4% | Only Nemotron 3 Ultra measured |
| Long context reasoning (AA-LCR) | 82.7% | 79.3% | Claude Haiku 5.5 |
| DTBench | 95.0% | 90.1% | Claude Haiku 5.5 |
| LMCA | 51.1% | 36.9% | Claude Haiku 5.5 |
| Furniture assembly | 47.5% | Not measured | Only Claude Haiku 5.5 measured |
| LMArena Text | 1401 | 1445 | Nemotron 3 Ultra |
| LMArena Text: instruction following | 1416 | 1418 | Nemotron 3 Ultra |
| LMArena Text: creative writing | 1336 | 1398 | Nemotron 3 Ultra |
| LMArena Text: English | 1409 | 1454 | Nemotron 3 Ultra |
| LMArena Text: non-English | 1386 | 1427 | Nemotron 3 Ultra |
| LMArena Text: Chinese | 1431 | 1498 | Nemotron 3 Ultra |
| LMArena Text: German | Not measured | 1474 | Only Nemotron 3 Ultra measured |
| LMArena Text: Korean | Not measured | 1385 | Only Nemotron 3 Ultra measured |
| LMArena Text: French | 1441 | 1473 | Nemotron 3 Ultra |
| LMArena Text: Spanish | 1385 | 1454 | Nemotron 3 Ultra |
| LMArena Text: Russian | 1373 | 1417 | Nemotron 3 Ultra |
| LMArena Text: Polish | Not measured | 1385 | Only Nemotron 3 Ultra measured |
| LMArena Text: multi-turn | 1396 | 1411 | Nemotron 3 Ultra |
| LMArena Text: longer queries | 1399 | 1437 | Nemotron 3 Ultra |
| LMArena Text: writing and language | 1370 | 1405 | Nemotron 3 Ultra |
| LMArena Text: entertainment and media | 1352 | 1397 | Nemotron 3 Ultra |
| MultiChallenge | 67.7% | Not measured | Only Claude Haiku 5.5 measured |
| Neither model has a result on the other 21 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Haiku 5.5 | Nemotron 3 Ultra | 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
Claude Haiku 5.5 costs less
Repository review
50K input + 3K output tokens
Claude Haiku 5.5 costs less
Agent loop
200K input + 10K output tokens
Claude Haiku 5.5 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 | Anthropic Claude Haiku 5.5 | NVIDIA Nemotron 3 Ultra |
|---|---|---|
| Maker | Anthropic | NVIDIA |
| Weights | No public weights listed | Open weights |
| Released | October 7, 2026 | June 4, 2026 |
| Context window | 1M | 262K |
| Input $/Mtok | $0.10 | $0.60 |
| Output $/Mtok | $0.50 | $2.40 |
| Coding index | 70.7 | 30.0 |
| Independent measurements behind it | 5 | 3 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Haiku 5.5 better than Nemotron 3 Ultra for coding?
Pick Claude Haiku 5.5 for coding: it scores 70.7 on the Vibe Coding Index against 30.0 for Nemotron 3 Ultra. Pick Nemotron 3 Ultra for work measured by LMArena Text: coding or LMArena Text: software and IT, where it leads.
Which is cheaper, Claude Haiku 5.5 or Nemotron 3 Ultra?
Claude Haiku 5.5 costs $0.10 per million input tokens and $0.50 per million output tokens; Nemotron 3 Ultra costs $0.60 and $2.40. Cost per solved task is known for neither of them.
Which has the bigger context window, Claude Haiku 5.5 or Nemotron 3 Ultra?
Claude Haiku 5.5, with 1M tokens against 262K.
How many benchmarks is the Claude Haiku 5.5 vs Nemotron 3 Ultra comparison based on?
50 benchmarks have a result for both models as of October 23, 2026. Claude Haiku 5.5's coding index rests on 5 independent benchmarks and Nemotron 3 Ultra's on 3. Where only one model has a result, the page says so instead of naming a winner.