Nemotron 3 Ultra 550B A55B vs GPT-OSS 120B
Benchmarks, API Token Pricing, Context Window & Speed Comparison
Related topics (12)
Nemotron 3 Ultra 550B A55B by NVIDIA and GPT-OSS 120B by OpenAI represent two of the frontier AI models analyzed in our comprehensive 2026 AI benchmark and LLM comparison. In this head-to-head evaluation, we examine API token pricing, context window specifications, inference speed (tokens per second), and empirical reasoning performance. From a pure economic perspective, GPT-OSS 120B holds a notable pricing advantage for token ingestion. On output generation, GPT-OSS 120B is more economical per million generated tokens. In data-heavy architectures requiring extensive repository or document analysis, Nemotron 3 Ultra 550B A55B provides an expanded memory horizon with 1,000K tokens. In latency-sensitive production environments, GPT-OSS 120B leads in tokens-per-second throughput, making it ideal for real-time conversational agents and high-concurrency workflows. Below is the complete empirical head-to-head breakdown across cost, speed, context, and capability matrices.
Changez et Comparez les Modèles
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Nemotron 3 Ultra 550B A55B
Poids lourd open sourcede NVIDIA crowning ouvert-weight foundation géant intégrant 550B total paramètres, 1M fenêtre de contexte, et d'avant-garde d'entreprise raisonnement.
$1.00 / 1M
$3.00 / 1M
1M tokens
64.5%
GPT-OSS 120B
Poids lourd open sourceun heavyweight ouvert-weight GPT modèle de raisonnement qui fonctionne sur un unique GPU.
$0.15 / 1M
$0.60 / 1M
131.1K tokens
45.5%
Différences Clés en un Coup d’Œil
- GPT-OSS 120B is 5.8x cheaper for API usage (input + output tokens combined).
- Nemotron 3 Ultra 550B A55B has a larger context window (1M vs 131K tokens).
- GPT-OSS 120B is faster at 95 tok/s vs 65 tok/s.
- Nemotron 3 Ultra 550B A55B leads on SWE-bench coding (64.5% vs 45.5%).
| Caractéristique | Nemotron 3 Ultra 550B A55B | GPT-OSS 120B |
|---|---|---|
Intelligence Index Composite reasoning & knowledge score (0-100) | 60 | 56 |
Provider | NVIDIA | OpenAI |
Input Price Cost per million input tokens | $1.00 / 1M | $0.15 / 1M |
Output Price Cost per million output tokens | $3.00 / 1M | $0.60 / 1M |
Blended Price Weighted 7:2:1 cache:input:output per 1M | $0.68 / 1M | $0.10 / 1M |
Context Window Maximum input + output tokens | 1M tokens~1,500 A4 pages of text | 131.1K tokens~197 A4 pages of text |
Max Output Tokens Per single request | 66K | 33K |
Throughput Speed Tokens generated per second | 65 tok/s | 95 tok/s |
SWE-bench Verified Real-world software engineering | 64.5% | 45.5% |
GPQA Diamond Graduate-level reasoning | 76% | 68.5% |
Cached Input Price Prompt caching discount per 1M tokens | $0.25 / 1M | $0.01 / 1M |
Qui gagne où ?
At-a-glance decision frameworkScores de Benchmarks Vérifiés
Official evaluation metrics verified by independent third-party research labs.
Industry benchmark evaluating real-world GitHub issue resolution and multi-file debugging.
Challenging questions created by domain experts to test complex PhD-level reasoning.
Hardened reasoning and academic knowledge benchmark with reduced lucky-guess probability.
Crowdsourced human preference evaluation based on blind, head-to-head model battles.
Extremely difficult, closed-ended questions spanning the frontier of human expert knowledge.
Autonomous multi-step tasks executed inside a real command-line terminal environment.
Research-grade coding problems drawn from real scientific and numerical workloads.
Contamination-free competitive programming problems collected continuously over time.
American Invitational Mathematics Examination — multi-step Olympiad-level reasoning.
Accuracy when reasoning over very large inputs that fill the model context window.
Tokens emitted per second during active generation streaming.
Latence et Temps de Réponse
Time to first token (TTFT) and estimated end-to-end response time for a typical 500-token response.
Simulateur Interactif de Coût de Tokens
Adjust sliders to calculate projected monthly cloud API spending with prompt caching discounts.
Nemotron 3 Ultra 550B A55B · Strengths & Key Advantages
- massif 550B capacité avec 55B actif inférence offrant de pointe raisonnement profondeur
- Colossal 1 millions token fenêtre de contexte avec flawless long-range recall
- à poids ouverts sous permissive license pour souverain national et d'entreprise déploiements
Considerations & Trade-offs
- nécessite substantiel DGX/H100 multinœud clusters pour auto-hébergement
- texte-seulement sans natif visuel traitement
GPT-OSS 120B · Strengths & Key Advantages
- o4-mini-classe performances avec fully à poids ouverts
- fonctionne sur un unique élevé-mémoire GPU thanks à MoE routage
- solide appel d'outils pour auto-hébergé agents
- Near-o4-mini qualité sur privé infrastructure
Considerations & Trade-offs
- Still behind propriétaire de pointe modèles sur raisonnement
- texte-seulement modality support
- nécessite serious GPU mémoire à self-host
Token Use & Task Economics
Estimated cost and token consumption to complete one representative agentic task.
| Metric | Nemotron 3 Ultra 550B A55B | GPT-OSS 120B |
|---|---|---|
Cost per Task Estimated USD to finish one task | $0.85 | $0.14 |
Output Tokens / Task Tokens generated per task | 48K | 45K |
Reasoning Tokens / Task Thinking tokens burned per task | 24K | 22K |
Spécifications Techniques
Architecture, release timeline, capabilities, and modalities.
| Caractéristique | Nemotron 3 Ultra 550B A55B | GPT-OSS 120B |
|---|---|---|
| Official API Model ID (SDK) | nemotron-3-ultra-550b-a55b | gpt-oss-120b |
| API Protocol | OpenAI-Compatible REST / vLLM / SGLang / HuggingFace TGI | OpenAI Responses API & Chat Completions v1 |
| Release Date | 2026-06 | 2025-08 |
| Knowledge Cutoff | February 2026 | June 2024 |
| Architecture | Colossal Sparse MoE (550B Total / 55B Active) | Sparse MoE transformer with reasoning |
| Parameters | 550B (55B active MoE) | 117B (5.1B active MoE) |
| Enterprise Rate Limits (RPM / TPM) | Unlimited (Hardware-bound on self-hosted GPU) / 10,000 RPM Cloud · Unlimited local throughput / 10M+ TPM Managed Cloud | Unlimited (Hardware-bound on self-hosted GPU) / 10,000 RPM Cloud · Unlimited local throughput / 10M+ TPM Managed Cloud |
| Long-Context Tier (>128K/200K) | Flat rate ($1/1M in) across full 1000K window | Flat rate ($0.15/1M in) across full 131K window |
| Prompt Cache Policy & TTL | Cached input at $0.25/1M tokens | Automatic prefix caching at $0.015/1M (no extra cache-write fee) |
| Computer Use / GUI Agent | API / CLI Tool-Use & DOM Agent ready (no raw pixel desktop click loop) | API / CLI Tool-Use & DOM Agent ready (no raw pixel desktop click loop) |
| MCP & Parallel Tool Calling | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema |
| Web Search Grounding & Sandbox | Supported via external Tavily/Exa Search & E2B/Docker Sandbox tools | Native Web Search tool + Hosted Code Interpreter & File Search RAG |
| Official Fine-Tuning Support | Full Weights SFT, LoRA, QLoRA, DPO & GRPO RL (Unsloth / Axolotl / Llama-Factory) | Full Weights SFT, LoRA, QLoRA, DPO & GRPO RL (Unsloth / Axolotl / Llama-Factory) |
| Multimodal Token Billing | Text BPE (~4 chars/token) | Text BPE (~4 chars/token) |
| Quantization & Min GPU VRAM | BF16 / FP16, FP8 Dynamic, INT4 AWQ / GPTQ, GGUF (Q4_K_M / Q8_0) · 341 GB VRAM (4-bit Quantized) · 1183 GB VRAM (Native BF16) | BF16 / FP16, FP8 Dynamic, INT4 AWQ / GPTQ, GGUF (Q4_K_M / Q8_0) · 73 GB VRAM (4-bit Quantized) · 252 GB VRAM (Native BF16) |
| Safety & Frontier Classification | Open-Weights System Card + Customizable Guardrail Layer (Llama Guard / ShieldGemma) | OpenAI Preparedness Framework Audited & System Card Published |
| Enterprise Compliance (ZDR/HIPAA/SOC2) | 100% Air-Gapped On-Premises / Private VPC · Full HIPAA, GDPR & SOC2 Control | 100% Air-Gapped On-Premises / Private VPC · Full HIPAA, GDPR & SOC2 Control |
| Input Modalities | text | text |
| Output Modalities | text | text |
Nemotron 3 Ultra 550B A55B vs GPT-OSS 120B: Réponses Rapides (FAQ)
Which is more intelligent, Nemotron 3 Ultra 550B A55B or GPT-OSS 120B?
Nemotron 3 Ultra 550B A55B is more intelligent. It scores 60 compared with 56 on the composite Intelligence Index.
Which model is faster?
GPT-OSS 120B is faster, generating 95 tokens per second compared with 65 tokens per second.
Which model is cheaper to run?
GPT-OSS 120B is cheaper at $0.10 per 1M tokens blended, compared with $0.68 (7:2:1 cache:input:output ratio).
Which model has lower latency?
GPT-OSS 120B has lower latency, with a time to first token of 0.48s compared with 0.62s.
Which model has a larger context window?
Nemotron 3 Ultra 550B A55B has a larger context window, supporting 1M tokens compared with 131.1K tokens.
Verdict
Verdict & Model Selection Recommendation: Choose Nemotron 3 Ultra 550B A55B if your priority is National AI initiatives, sovereign defense intelligence, and enterprise-wide autonomous agent swarms. Its performance in demanding tasks justifies its operational token cost. Choose GPT-OSS 120B if your workflow prioritizes Self-hosted agents that need near-frontier quality on private data. For large-scale batch processing or customer-facing conversational interfaces, its balance of speed and economics delivers superior ROI.
Questions fréquentes
How does Nemotron 3 Ultra 550B A55B compare to GPT-OSS 120B in API token pricing and cost per token?+
Nemotron 3 Ultra 550B A55B costs $1.00 per 1M input tokens and $3.00 per 1M output tokens, whereas GPT-OSS 120B costs $0.15 input and $0.60 output. Overall, GPT-OSS 120B is the more cost-effective model for high-volume API pipelines. Both models support prompt caching discounts of up to 90% for repeated prompt prefixes.
Which model has a larger context window: Nemotron 3 Ultra 550B A55B or GPT-OSS 120B?+
Nemotron 3 Ultra 550B A55B supports a context window of 1,000K tokens (~750k words), while GPT-OSS 120B supports 131K tokens (~98k words). Therefore, Nemotron 3 Ultra 550B A55B can process more textual data and document context in a single prompt.
Which AI model is better for software engineering and coding: Nemotron 3 Ultra 550B A55B or GPT-OSS 120B?+
Nemotron 3 Ultra 550B A55B scores 64.5% on SWE-bench Verified while GPT-OSS 120B scores 45.5%. For autonomous software engineering and multi-file debugging, Nemotron 3 Ultra 550B A55B holds the verified benchmark lead.
What is the difference in reasoning capability and extended thinking between Nemotron 3 Ultra 550B A55B and GPT-OSS 120B?+
Nemotron 3 Ultra 550B A55B features native chain-of-thought extended thinking mode with configurable reasoning effort. In contrast, GPT-OSS 120B provides chain-of-thought reasoning depth for complex math and science.
How does inference speed (tokens per second) compare between Nemotron 3 Ultra 550B A55B and GPT-OSS 120B?+
Nemotron 3 Ultra 550B A55B generates approximately 65 tokens per second, while GPT-OSS 120B delivers 95 tokens per second. In latency-sensitive production environments, GPT-OSS 120B provides faster time-to-first-token (TTFT) and higher streaming response velocity.
Can you implement a tiered LLM routing setup combining Nemotron 3 Ultra 550B A55B and GPT-OSS 120B to optimize costs?+
Yes! High-efficiency architectures route high-frequency routine classification and conversational tasks to GPT-OSS 120B to save operational costs, and dynamically escalate complex architectural queries or reasoning tasks to Nemotron 3 Ultra 550B A55B. This tiered routing pattern cuts overall API bills by up to 70%.
Understand key metrics like context window, token pricing, reasoning mode, and SWE-bench scores in our comprehensive AI glossary.
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Les scores de benchmarks, tarifs par token et limites évoluent rapidement. Vérifiez toujours les spécifications actuelles sur la documentation officielle du fournisseur.
Sources: GetInfoUs Independent AI Benchmarks & Official API Specs