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Google: Gemini 4 Argon vs MoonshotAI: Kimi K3.1 Pro

Both models cost about the same for the sample workload; both have the same context window.

MetricGoogle: Gemini 4 ArgonMoonshotAI: Kimi K3.1 Pro
Model IDgoogle/gemini-4-argonmoonshotai/kimi-k3.1-pro
Prompt price$2.00 / 1M tokens$2.00 / 1M tokens
Completion price$10.00 / 1M tokens$10.00 / 1M tokens
Context1,048,576 tokens1,048,576 tokens
Tool calling✓✓
Structured outputs✓✓
Reasoning✓✓
Response format✓✓
Web search––
Input modalitiesaudio, file, image, text, videotext, image, video
Output modalitiestexttext
Added2026-10-132026-10-23

Sample workload

Chat app: 1,000 prompt + 500 completion tokens × 100 requests per day.

CostGoogle: Gemini 4 ArgonMoonshotAI: Kimi K3.1 Pro
Per day$0.70$0.70
Per 30 days$21.00$21.00

No difference.

Data updated 2026-10-30