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Flagship — best answers, highest costOpen Weights
Kimi K3.1 Pro Pricing
MoonshotAI · moonshotai-kimi-k3-1-pro
Input / 1M tokens
$2.00
Output / 1M tokens
$10.00
Context window
1,048,576 tokens
≈ 1,398 pages of text
Max output
943,718 tokens
What it costs in practice
Typical request (1,200 in + 400 out tokens)$0.0064
1,000 requests / month$6.40/mo10,000 requests / month$64.00/mo100,000 requests / month$640.00/moEstimate your own workloadOpens the calculator with Kimi K3.1 Pro preloaded — adjust volume and token counts there.
Price history
Only one price point recorded so far.
The staircase chart appears once a price change is detected.
What it excels at
Excels at long-context document analysis and summarization with 1M-token context and near-1M output capacity.
The business tradeoff
High output pricing at $10 per million tokens; ecosystem and tooling remain narrower than major open-weight families.
Cheaper from MoonshotAI
Head-to-head
Vendor list rates, as of Oct 23, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.