Model comparison

Kimi K3 vs GPT-5.6 Luna

Compare Kimi K3 (Moonshotai) and GPT-5.6 Luna (OpenAI) by price, context, capabilities, and latency.

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Which should you pick?

  • Price: GPT-5.6 Luna is cheaper ($0.2 / 1M tokens input / $1.20 / 1M tokens output) vs Kimi K3 ($2.95 / 1M tokens input / $14.71 / 1M tokens output).

Side by side

Kimi K3 vs GPT-5.6 Luna — full comparison

Compare price, provider, context, capabilities, latency, and source basis.

ModelProviderInputOutputContextCapabilitiesBest forLatencyStatusSource
Kimi K3moonshotai/kimi-k3Moonshotai$2.95 / 1M tokens$14.71 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1658-4158msCatalogPlatform curated
GPT-5.6 Lunaopenai/gpt-5.6-lunaOpenAIStarting at $0.2 / 1M tokens$1.20 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat1396-2773msCatalogPlatform curated

FAQ

Kimi K3 vs GPT-5.6 Luna FAQ

Is Kimi K3 or GPT-5.6 Luna cheaper?

GPT-5.6 Luna is cheaper ($0.2 / 1M tokens input / $1.20 / 1M tokens output) vs Kimi K3 ($2.95 / 1M tokens input / $14.71 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.

Which has a larger context window, Kimi K3 or GPT-5.6 Luna?

Both offer the same context window: 1M tokens.

Kimi K3 vs GPT-5.6 Luna for Vision: which should I pick?

Both target Vision. Pick GPT-5.6 Luna to optimize cost, or Kimi K3 for the longer context window. Test both on real prompts before committing production traffic.

Kimi K3 detailsGPT-5.6 Luna detailsPricing calculatorOpenAI-compatible quickstart