Model comparison

Gemini 3.5 Flash vs Kimi-K2.5

Compare Gemini 3.5 Flash (Google) and Kimi-K2.5 (Moonshotai) by price, context, capabilities, and latency.

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Price deadline

Gemini Flash prices rise Jan 1, 2027

Per Google's published pricing page, Gemini Flash input prices double on Jan 1, 2027. The same workload runs an order of magnitude cheaper on DeepSeek and GLM. Source: Google pricing Full price breakdown

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Which should you pick?

  • Price: Kimi-K2.5 is cheaper ($0.58 / 1M tokens input / $3.02 / 1M tokens output) vs Gemini 3.5 Flash ($1.50 / 1M tokens input / $9 / 1M tokens output).
  • Context: Gemini 3.5 Flash has the larger context window (1M tokens).

Side by side

Gemini 3.5 Flash vs Kimi-K2.5 — full comparison

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

ModelProviderInputOutputContextCapabilitiesBest forLatencyStatusSource
Gemini 3.5 Flashgoogle/gemini-3.5-flashGoogle$1.50 / 1M tokens$9 / 1M tokens1M
StreamingTool callingJSON modeVision
image understanding, multimodal chat0-0msCatalogPlatform curated
Kimi-K2.5moonshotai/kimi-k2.5Moonshotai$0.58 / 1M tokens$3.02 / 1M tokens256k
StreamingTool callingJSON modeVision
image understanding, multimodal chat1057-1836msCatalogPlatform curated

FAQ

Gemini 3.5 Flash vs Kimi-K2.5 FAQ

Is Gemini 3.5 Flash or Kimi-K2.5 cheaper?

Kimi-K2.5 is cheaper ($0.58 / 1M tokens input / $3.02 / 1M tokens output) vs Gemini 3.5 Flash ($1.50 / 1M tokens input / $9 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.

Which has a larger context window, Gemini 3.5 Flash or Kimi-K2.5?

Gemini 3.5 Flash is larger (1M tokens) vs 256k tokens.

Gemini 3.5 Flash vs Kimi-K2.5 for Vision: which should I pick?

Both target Vision. Pick Kimi-K2.5 to optimize cost, or Gemini 3.5 Flash for the longer context window. Test both on real prompts before committing production traffic.

Gemini 3.5 Flash detailsKimi-K2.5 detailsPricing calculatorOpenAI-compatible quickstart