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ModelCap

Model decision surface

Compare AI models

Start with Llama 3.1 8B Instruct and Sonar Pro, 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

Llama 3.1 8B Instruct vs Sonar Pro

Live dataset updated 8/18/2026, 3:23:39 AM UTC

Open 1200×630 evidence receipt
Factual comparison of Llama 3.1 8B Instruct and Sonar Pro
Field
Sonar Pro

Perplexity

ModelCap position#216#201
Index score3.98.6
EvidenceMeasured2 public benchmark observations across 2 boardsMeasured1 public benchmark observation across 1 board
Input / 1M$0.05$3.00
Output / 1M$0.08$15.00
Pricing statusfreshfresh
Context131K200K
Providers51
Weight accessGated accessAPI only

Decision facts

  • Llama 3.1 8B Instruct is #216; Sonar Pro is #201 on the same current language board.
  • Index scores are 3.9 for Llama 3.1 8B Instruct and 8.6 for Sonar Pro.
  • Both positions use Measured evidence.
  • Listed output price per 1M tokens is $0.08 for Llama 3.1 8B Instruct and $15.00 for Sonar Pro.
  • Published context is 131,072 tokens for Llama 3.1 8B Instruct and 200,000 for Sonar Pro.
  • Weight access differs: Llama 3.1 8B Instruct is gated; Sonar Pro is none.
  • ModelCap currently lists 5 providers for Llama 3.1 8B Instruct and 1 for Sonar Pro.

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.