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MoonshotAI: Kimi K3.1 Pro vs OpenAI: GPT-6.1 Sol Pro

Both models cost about the same for the sample workload; OpenAI: GPT-6.1 Sol Pro has the larger context window.

MetricMoonshotAI: Kimi K3.1 ProOpenAI: GPT-6.1 Sol Pro
Model IDmoonshotai/kimi-k3.1-proopenai/gpt-6.1-sol-pro
Prompt price$2.00 / 1M tokens$2.00 / 1M tokens
Completion price$10.00 / 1M tokens$10.00 / 1M tokens
Context1,048,576 tokens1,050,000 tokens
Tool calling✓✓
Structured outputs✓✓
Reasoning✓✓
Response format✓✓
Web search––
Input modalitiestext, image, videofile, image, text
Output modalitiestexttext
Added2026-10-232026-09-29

Sample workload

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

CostMoonshotAI: Kimi K3.1 ProOpenAI: GPT-6.1 Sol Pro
Per day$0.70$0.70
Per 30 days$21.00$21.00

No difference.

MoonshotAI: Kimi K3.1 Pro detailsOpenAI: GPT-6.1 Sol Pro detailsOpen in the live compare viewTry your own workload

Data updated 2026-10-30