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ModelCap

Model decision surface

Compare AI models

Start with Claude Sonnet 5 and Gemma 4 31B, 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 Gemma 4 31B

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

Open 1200×630 evidence receipt
Factual comparison of Claude Sonnet 5 and Gemma 4 31B
Field
ModelCap position#26#29
Index score78.573.8
EvidenceMeasured4 public benchmark observations across 4 boardsMeasured3 public benchmark observations across 3 boards
Input / 1M$2.00$0.09
Output / 1M$10.00$0.34
Pricing statusfreshfresh
Context1M262K
Providers511
Weight accessAPI onlyOpen weights

Decision facts

  • Claude Sonnet 5 is #26; Gemma 4 31B is #29 on the same current language board.
  • Index scores are 78.5 for Claude Sonnet 5 and 73.8 for Gemma 4 31B. 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 $0.34 for Gemma 4 31B. 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 $0.35 for Gemma 4 31B. Gemma 4 31B costs 96.1% 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 262,144 for Gemma 4 31B.
  • Weight access differs: Claude Sonnet 5 is none; Gemma 4 31B is open.
  • ModelCap currently lists 5 providers for Claude Sonnet 5 and 11 for Gemma 4 31B.

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.