LLM Comparison

GPT-5.6 Luna vs Trinity Large Thinking

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

Price vs Intelligence

6251402817$0.37$0.51$0.64$0.78$0.91Avg Price per M tokensIntelligenceGPT-5.6 Luna52.3 / $0.70Trinity Large Thinking26.9 / $0.54

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2/6 models
Same tier:
 OpenAIGPT-5.6 LunaArcee AITrinity Large Thinking
OrganizationOpenAIOpenAIArcee AIArcee AI
OpenTools Score
52
74.7
27
50.3
FamilyGPT-5.6Trinity
StatusCurrentCurrent
Release DateJul 2026Apr 2026
Context Window1.1M tokens262K tokens
Input Price$0.20/M tokens$0.22/M tokens
Output Price$1.20/M tokens$0.85/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.Cache read: $0.0600/M tokens
Capabilities
textvisionreasoningcodingtool-useweb-searchfile-searchcomputer-useagents
textcodeextended-thinking
Training CutoffFeb 16, 2026—
Max Output128K tokens262K tokens
API Identifiergpt-5.6-lunaarcee-ai/trinity-large-thinking
Benchmarks
Artificial Analysis Intelligence Index
51artificial-analysis
—
Artificial Analysis Coding Agent Index
74.6artificial-analysis
—
Artificial Analysis Intelligence Index v4.3
37.5048artificial-analysis
10.8821artificial-analysis
GPQA Diamond
91.1111artificial-analysis
76.3https://huggingface.co/arcee-ai/Trinity-Large-Thinking
SciCode
53.588artificial-analysis
40.625artificial-analysis
Terminal-Bench 2.1
80.8989artificial-analysis
20.5993artificial-analysis
MMLU-Pro—
83.4https://huggingface.co/arcee-ai/Trinity-Large-Thinking
 View GPT-5.6 LunaView Trinity Large Thinking

Cost Calculator

Enter your expected monthly token usage to compare costs.

ModelInputOutputTotal / movs Best
Trinity Large ThinkingCheapest$0.22$0.43$0.65—
GPT-5.6 Luna$0.20$0.60$0.80+24%

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.

Arcee AI

Trinity Large Thinking

Trinity Large Thinking is a large language model from Arcee AI. Supports up to 262,144 token context window. Available from $0.22/M input tokens.

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