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Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.

  1. Kimi K3.1 ProMoonShot AIRemove
  2. GPT-6 LunaOpenAIRemove
kimi-k3.1-pro vs gpt-6-luna
AttributeKimi K3.1 Prokimi-k3.1-proGPT-6 Lunagpt-6-luna
Pricing
Input$2.00 / 1M$0.10 / 1M
Output$10.00 / 1M$0.50 / 1M
Cache Write (5m)$2.00 / 1M$0.10 / 1M
Cache Write (1h)$2.00 / 1M$0.10 / 1M
Cache Read$2.00 / 1M$0.10 / 1M
Web Search$0 / 1M$0 / 1M
Context
Max context1M1.1M
Max outputN/AN/A
Capabilities
VisionYesYes
Function CallingYesYes
JSON ModeYesYes
StreamingYesYes
Catalogue
ProviderMoonShot AIOpenAI
Categorychatchat
Charge typePay As You GoPay As You Go
Released——
Description
SummaryKimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model, building on Kimi K3 with enhanced post-training for advanced reasoning and autonomous task execution. It features a 1M-token context window and native image and video understanding, enabling complex, long-context multimodal workflows. Optimized for long-horizon coding, 3D creation, financial research, and end-to-end agentic knowledge work, Kimi K3.1 Pro is well suited for autonomous software engineering, multimodal analysis, and complex professional workflows that require sustained reasoning and reliable execution.GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, optimized for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic tasks. It combines low-cost, responsive inference with the GPT-6 family’s improvements in factual reliability and clear, concise communication. At higher reasoning effort, GPT-6 Luna can also handle complex software engineering and computer-use workflows that previously required a Sol-tier model, making it a versatile choice for scalable production applications that need to balance speed, cost, and capability.