Nemotron 3 Ultra Free model profile
Evidence snapshot:
Nemotron 3 Ultra is a NVIDIA model profile with a 1,000,000-token context window. The dated catalog snapshot records text modalities and interfaces for reasoning controls, text generation, tool calling.
NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it supports text input and output with a context window of up to 1M tokens. It is suited for long-running agentic workflows, including agent orchestration, coding agents, deep research, and complex enterprise tasks. It is particularly strong at multi-step reasoning and planning, with high-throughput inference designed for high-volume agent pipelines. It is part of the NVIDIA Nemotron family of open models for agentic AI.
Nemotron 3 Ultra Free is a reference profile: NVIDIA publishes it, Kendr documents it for comparison, and it carries no Kendr alias to call.
Nemotron 3 Ultra Free is an independent knowledge profile. It does not claim that Kendr hosts the model, quote a Kendr customer price, promise API availability, or advertise a Kendr routing receipt.
Nemotron 3 Ultra Free accepts text and returns text. The snapshot records reasoning controls, text generation, and tool calling as capabilities or interfaces.
No comparable unit price is present in the 2026-09-06 snapshot. A zero placeholder is not presented as a free-price claim.
The 2026-09-06 snapshot includes 2 Artificial Analysis indexes and 8 Design Arena categories. Publisher-reported launch results are labeled and are not presented as Kendr measurements; scores from different suites are not treated as interchangeable.
Nemotron 3 Ultra Free ranked #8 in the cited trailing-7-day third-party catalog usage dataset as of 2026-09-06. Observed within the cited trailing-7-day third-party catalog usage dataset; this is not global AI market share.
Profile data was reviewed for the 2026-09-06 snapshot. Claims retain their source dates, and unavailable fields are shown as unavailable instead of estimated.
Profile facts
- Profile type
- Model research profile
- Provider or publisher
- NVIDIA
- Context window
- 1,000,000 tokens
- Snapshot date
- 2026-09-06
- Knowledge cutoff
- Not disclosed
- Reference catalog ID
- nvidia/nemotron-3-ultra-550b-a55b:free
When to pick Nemotron 3 Ultra Free
Nemotron 3 Ultra Free is a reference profile: NVIDIA publishes it, Kendr documents it for comparison, and it carries no Kendr alias to call.
Each condition below is derived from this model's own values in the 2026-09-06 snapshot, compared only against models publishing the same field.
- Reach for it when cost is the binding constraint. At $0 in and $0 out per 1M tokens, combined token price sits in the cheapest quarter of the 146 models publishing both rates in this snapshot.
- Reach for it when the model has to call tools. Tool calling is recorded in the snapshot, so this route can drive an agent loop rather than only answer in prose.
- Reach for it when you want to trade depth against cost per call. Reasoning effort is selectable across high, medium, so one route can serve both cheap and deep work.
- Look elsewhere when you need to call it through Kendr today. This is a research reference profile with no Kendr alias. The facts and evidence here are published for comparison; the model is not routable on Kendr.
Context, modalities, and identity
Nemotron 3 Ultra Free accepts text and returns text. The snapshot records reasoning controls, text generation, and tool calling as capabilities or interfaces.
- Provider or publisher
- NVIDIA
- Context window
- 1,000,000 tokens
- Maximum output
- 65,536 tokens
- Input modalities
- text
- Output modalities
- text
- Knowledge cutoff
- Not disclosed
Model overview
NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it supports text input and output with a context window of up to 1M tokens. It is suited for long-running agentic workflows, including agent orchestration, coding agents, deep research, and complex enterprise tasks. It is particularly strong at multi-step reasoning and planning, with high-throughput inference designed for high-volume agent pipelines. It is part of the NVIDIA Nemotron family of open models for agentic AI.
- Reference model ID
- nvidia/nemotron-3-ultra-550b-a55b:free
- Canonical version
- nvidia/nemotron-3-ultra-550b-a55b-20260604
- Hugging Face ID
- nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16
Capabilities and supported controls
Capabilities and parameters are reported from the dated catalog and source records; their presence does not guarantee identical behavior across every provider route.
- Supported parameters
- include_reasoning, max_tokens, reasoning, reasoning_effort, seed, temperature, tool_choice, tools, top_p
- reasoning controls
- text generation
- tool calling
Dated pricing snapshot
No comparable unit price is present in the 2026-09-06 snapshot. A zero placeholder is not presented as a free-price claim.
These are dated third-party reference prices, not Kendr prices or an availability offer. Routes, tiers, caching, region, and provider policy can change the landed price.
- Price date
- 2026-09-06
- Input
- No verified rate
- Cached input
- No verified rate
- Output
- No verified rate
Provider routes, performance, and uptime
The snapshot retains 1 provider endpoint. Provider prices, context limits, p50 performance, and uptime can differ by route and are not Kendr guarantees.
- Active provider endpoints
- 1
- Best p50 latency
- 44.04 s
- Best p50 throughput
- 5 tok/s
- Availability with routing
- 77.27% over the sampled window
- Availability without routing
- 77.25% over the sampled window
- Performance date
- 2026-09-06
| Provider | Quantization | Input / 1M | Output / 1M | Cache read / 1M | Context | p50 latency | p50 throughput | Uptime (1d) |
|---|---|---|---|---|---|---|---|---|
| NVIDIA | unknown | $0 / 1M | $0 / 1M | No verified rate | 1,000,000 tokens | 44.04 s | 5 tok/s | 98.20% |
Benchmark evidence and limitations
The 2026-09-06 snapshot includes 2 Artificial Analysis indexes and 8 Design Arena categories. Publisher-reported launch results are labeled and are not presented as Kendr measurements; scores from different suites are not treated as interchangeable.
Third-party catalog fields normalized from the cited model dataset; benchmark methodology and coverage differ by source.
- Coding Index
- 49.3
- Agentic Index
- 21.7
| Design Arena category | Elo | Win rate | Rank |
|---|---|---|---|
| 3d | 1171 | 41% | #59 |
| asciiart | 1099 | 36.4% | #55 |
| codecategories | 1153 | 36.3% | #77 |
| dataviz | 1159 | 38.3% | #70 |
| gamedev | 1156 | 37% | #70 |
| svg | 1113 | 36.2% | #58 |
| uicomponent | 1158 | 37.4% | #70 |
| website | 1142 | 34.3% | #82 |
Popularity and market context
Nemotron 3 Ultra Free ranked #8 in the cited trailing-7-day third-party catalog usage dataset as of 2026-09-06. Observed within the cited trailing-7-day third-party catalog usage dataset; this is not global AI market share.
- Third-party catalog rank
- #8
- Global market share
- Not inferred
- Observation date
- 2026-09-06
Frequently asked questions
When should I use Nemotron 3 Ultra Free?
Nemotron 3 Ultra Free is a reference profile: NVIDIA publishes it, Kendr documents it for comparison, and it carries no Kendr alias to call. Reach for it when cost is the binding constraint: At $0 in and $0 out per 1M tokens, combined token price sits in the cheapest quarter of the 146 models publishing both rates in this snapshot. Reach for it when the model has to call tools: Tool calling is recorded in the snapshot, so this route can drive an agent loop rather than only answer in prose. Reach for it when you want to trade depth against cost per call: Reasoning effort is selectable across high, medium, so one route can serve both cheap and deep work. Look elsewhere when you need to call it through Kendr today: This is a research reference profile with no Kendr alias. The facts and evidence here are published for comparison; the model is not routable on Kendr.
What is Nemotron 3 Ultra Free?
Nemotron 3 Ultra is a NVIDIA model profile with a 1,000,000-token context window. The dated catalog snapshot records text modalities and interfaces for reasoning controls, text generation, tool calling.
What context window does Nemotron 3 Ultra Free have?
The dated profile lists 1,000,000 tokens of context and up to 65,536 output tokens. Provider routes, variants, and runtime configuration can impose lower effective limits.
What benchmark evidence is available for Nemotron 3 Ultra Free?
The 2026-09-06 snapshot includes 2 Artificial Analysis indexes and 8 Design Arena categories. Publisher-reported launch results are labeled and are not presented as Kendr measurements; scores from different suites are not treated as interchangeable. Third-party catalog fields normalized from the cited model dataset; benchmark methodology and coverage differ by source.
Is Nemotron 3 Ultra Free available through Kendr?
This is an independent knowledge profile, not a Kendr-hosted availability claim. Check Kendr's live public model API for currently enabled Kendr aliases.
Does the popularity rank represent Nemotron 3 Ultra Free's global market share?
Nemotron 3 Ultra Free ranked #8 in the cited trailing-7-day third-party catalog usage dataset as of 2026-09-06. Observed within the cited trailing-7-day third-party catalog usage dataset; this is not global AI market share. No global market-share percentage is inferred when the source does not publish one.
Sources and evidence dates
- Nemotron 3 Ultra third-party catalog record (catalog, checked 2026-09-06)
- Third-party model catalog methodology (methodology, checked 2026-09-06)
- NVIDIA official model documentation (primary, checked 2026-09-06)
- Artificial Analysis capability indices methodology (benchmark, checked 2026-09-06)
- Design Arena leaderboard and methodology (benchmark, checked 2026-09-06)