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GPT-5 Mini vs Nemotron 3 Ultra

Detailed technical comparison between GPT-5 Mini (OpenAI) and Nemotron 3 Ultra (Nvidia). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.

⚡ Executive Summary & Verdict

Comparison Snapshot

GPT-5 Mini: 4 WinsvsNemotron 3 Ultra: 2 Wins
Context Leader

Nemotron 3 Ultra

512,288 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

GPT-5 Mini

$0.25 / MTok
OpenAIactive

GPT-5 Mini

GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks. It provides the same instruction-following and safety-tuning benefits as GPT-5, but with reduced latency and cost....

View GPT-5 Mini Full Specs →
Nvidiaactive

Nemotron 3 Ultra

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...

View Nemotron 3 Ultra Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationGPT-5 MiniNemotron 3 Ultra
ProviderOpenAINvidia
Context Window400,000 tokens512,288 tokens🏆
Agent Suitability85/100N/A
Time to First Token (TTFT)180 msN/A
Deployment Modelmanaged apimanaged api
Production Stabilitystablebeta
API AvailableYesYes
Released Date2025-08-072026-06-04

API Pricing Comparison

Input Price per Million Tokens

GPT-5 Mini

$0.25

Nemotron 3 Ultra

$0.50

Output Price per Million Tokens

GPT-5 Mini

$2.00

Nemotron 3 Ultra

$2.20

💡 Cost Ratio: GPT-5 Mini is 2.0x cheaper per input token than Nemotron 3 Ultra.

Want to test both models live?

Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.

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Benchmark Performance Metrics

Standardized Scores (0–100%)

Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.

MMLUGeneral knowledge & multi-task understanding
86.5%vs87.8%+1.3% Nemotron 3 Ultra
GPT-5 Mini
Nemotron 3 Ultra 🏆
HumanEvalPython coding & logic synthesis
88.0%vs87.0%+1.0% GPT-5 Mini
GPT-5 Mini 🏆
Nemotron 3 Ultra
MATHComplex mathematical problem solving
82.5%vs68.2%+14.3% GPT-5 Mini
GPT-5 Mini 🏆
Nemotron 3 Ultra
GPQAGraduate-level expert reasoning
68.0%vs49.6%+18.4% GPT-5 Mini
GPT-5 Mini 🏆
Nemotron 3 Ultra
HellaSwagCommonsense reasoning and inference
95.5%vs85.4%+10.1% GPT-5 Mini
GPT-5 Mini 🏆
Nemotron 3 Ultra
MT-BenchMulti-turn conversation flow quality
9.0%vs9.1%+0.1% Nemotron 3 Ultra
GPT-5 Mini
Nemotron 3 Ultra 🏆

GPT-5 Mini Quirks & Gotchas

  • ▸Excellent for high-frequency classification and routing tasks
  • ▸Tool calling reliability drops on complex multi-step chains — use GPT-5 for agentic workflows

Nemotron 3 Ultra Quirks & Gotchas

No developer gotchas reported.

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