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ModelCap

Model decision surface

Compare AI models

Start with Claude Sonnet 5 and Kimi K3, or choose any two current ranked language models. Compare capability evidence, price, context, provider availability, and weight access without pretending one field decides every use case.

Current public data

Claude Sonnet 5 vs Kimi K3

Live dataset updated 9/22/2026, 9:31:46 PM UTC

Open 1200×630 evidence receipt
Factual comparison of Claude Sonnet 5 and Kimi K3
Field
Kimi K3

Moonshot AI

ModelCap position#26#12
Index score78.584.0
EvidenceMeasured4 public benchmark observations across 4 boardsMeasured6 public benchmark observations across 6 boards
Input / 1M$2.00$3.00
Output / 1M$10.00$15.00
Pricing statusfreshfresh
Context1M1M
Providers517
Weight accessAPI onlyRestricted license

Decision facts

  • Claude Sonnet 5 is #26; Kimi K3 is #12 on the same current language board.
  • Index scores are 78.5 for Claude Sonnet 5 and 84.0 for Kimi K3. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.
  • Both positions use Measured evidence.
  • Listed output price per 1M tokens is $10.00 for Claude Sonnet 5 and $15.00 for Kimi K3. For 1,000 requests with 2,000 input and 500 output tokens each (2M input + 0.5M output), the listed-rate estimate is $9.00 for Claude Sonnet 5 versus $13.50 for Kimi K3. Claude Sonnet 5 costs 33.3% less in this scenario. This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the selected endpoint before budgeting.
  • Published context is 1,000,000 tokens for Claude Sonnet 5 and 1,048,576 for Kimi K3.
  • Weight access differs: Claude Sonnet 5 is none; Kimi K3 is restricted.
  • ModelCap currently lists 5 providers for Claude Sonnet 5 and 17 for Kimi K3.

These are separate published fields, not a synthetic winner. ModelCap does not collapse price, access, context, and capability evidence into a hidden recommendation score.

Each comparison page is a permanent, shareable URL with the same live figures as this tool: ModelCap Index position, API pricing, context window, provider count, weight access and every shared benchmark board.