LLM Comparison

GPT-5.6 Luna vs Kimi K2 Thinking

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

Price vs Intelligence

7567595143$0.49$0.87$1.25$1.63$2.02Avg Price per M tokensIntelligenceGPT-5.6 Luna53.3 / $0.70Kimi K2 Thinking65.1 / $1.55

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2/6 models
Same tier:
 OpenAIGPT-5.6 LunaMoonshot AIKimi K2 Thinking
OrganizationOpenAIOpenAIMoonshot AIMoonshot AI
OpenTools Score
53
76.1
65
42.0
FamilyGPT-5.6Kimi
StatusCurrentCurrent
Release DateJul 2026Nov 2025
Context Window1.1M tokens262K tokens
Input Price$0.20/M tokens$0.60/M tokens
Output Price$1.20/M tokens$2.50/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: $0.1500/M tokens
Capabilities
textvisionreasoningcodingtool-useweb-searchfile-searchcomputer-useagents
textcodeextended-thinking
Training CutoffFeb 16, 2026—
Max Output128K tokens262K tokens
API Identifiergpt-5.6-lunamoonshotai/kimi-k2-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
—
GPQA Diamond
91.1111artificial-analysis
83.8384artificial-analysis
SciCode
53.588artificial-analysis
—
Terminal-Bench 2.1
80.8989artificial-analysis
—
GPQA—
84.5https://huggingface.co/moonshotai/Kimi-K2-Thinking
MMLU-Pro—
84.6https://huggingface.co/moonshotai/Kimi-K2-Thinking
AIME 2025—
94.6667artificial-analysis
 View GPT-5.6 LunaView Kimi K2 Thinking

Cost Calculator

Enter your expected monthly token usage to compare costs.

ModelInputOutputTotal / movs Best
GPT-5.6 LunaCheapest$0.20$0.60$0.80—
Kimi K2 Thinking$0.60$1.25$1.85+131%

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.

Moonshot AI

Kimi K2 Thinking

Kimi K2 Thinking is a large language model from Moonshot AI. Supports up to 262,144 token context window. Available from $0.60/M input tokens.

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