LLM Comparison

GPT-5.6 Luna vs Nemotron 3.5 Lightning 30B A3B

Side-by-side specs, pricing & capabilities · Updated September 2026

Price vs Intelligence

624833183$0.37$0.50$0.64$0.77$0.91Avg Price per M tokensIntelligenceGPT-5.6 Luna52.3 / $0.70Nemotron 3.5 Lightning 30B A3B13.1 / $0.53

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2/6 models
Same tier:
 OpenAIGPT-5.6 LunaNVIDIANemotron 3.5 Lightning 30B A3B
OrganizationOpenAIOpenAINVIDIANVIDIA
OpenTools Score
52
74.7
13
25.0
FamilyGPT-5.6Nemotron
StatusCurrentCurrent
Release DateJul 2026Aug 2026
Context Window1.1M tokens1.0M tokens
Input Price$0.20/M tokens$0.10/M tokens
Output Price$1.20/M tokens$0.95/M tokens
Pricing NotesOpenAI pricing page lists $1 input and $6 output per 1M tokens, plus GPT-5.6 cache-write and cache-read pricing.NVIDIA build lists serverless NIM pricing at $0.10 input and $0.95 output per million tokens. Self-hosted weights are also available; infrastructure costs vary.
Capabilities
textvisionreasoningcodingtool-useweb-searchfile-searchcomputer-useagents
textreasoningcodingtool-usefunction-callinglong-contextagenticlocal-deploymentopen-weights
Training CutoffFeb 16, 2026May 2026 post-training; September 2025 pre-training
Max Output128K tokens33K tokens
API Identifiergpt-5.6-lunanvidia/nemotron-3.5-lightning-30b-a3b
Benchmarks
Artificial Analysis Intelligence Index
51artificial-analysis
—
Artificial Analysis Coding Agent Index
74.6artificial-analysis
—
Artificial Analysis Intelligence Index v4.3
37.5048artificial-analysis
14https://artificialanalysis.ai/models/nemotron-3-5-lightning
GPQA Diamond
91.1111artificial-analysis
74.3434artificial-analysis
SciCode
53.588artificial-analysis
32.0602artificial-analysis
Terminal-Bench 2.1
80.8989artificial-analysis
24.3446artificial-analysis
Artificial Analysis Intelligence Index v4.1.1—
24artificial-analysis
 View GPT-5.6 LunaView Nemotron 3.5 Lightning 30B A3B

Cost Calculator

Enter your expected monthly token usage to compare costs.

ModelInputOutputTotal / movs Best
Nemotron 3.5 Lightning 30B A3BCheapest$0.10$0.48$0.58—
GPT-5.6 Luna$0.20$0.60$0.80+39%

OpenAI

GPT-5.6 Luna

GPT-5.6 Luna is OpenAI lower-cost GPT-5.6 model for high-volume reasoning, coding, and agentic workloads. OpenAI model docs list the same 1.05M token context window, 128K max output, and major tool support as the larger GPT-5.6 variants.

NVIDIA

Nemotron 3.5 Lightning 30B A3B

Nemotron 3.5 Lightning is NVIDIA open-weight 30B-A3B reasoning model for fast, long-running agents. Its hybrid Mamba-2, mixture-of-experts, and attention architecture supports function calling, coding, tool use, long context, and efficient local or serverless deployment.

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