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ModelCap

Model decision surface

Compare AI models

Start with GPT-4o (2024-08-06) and GPT-5.5, 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

GPT-4o (2024-08-06) vs GPT-5.5

Live dataset updated 10/18/2026, 4:49:00 AM UTC

Open 1200×630 evidence receipt
Factual comparison of GPT-4o (2024-08-06) and GPT-5.5
Field
GPT-5.5

OpenAI

ModelCap position#185#19
Index score36.878.7
EvidenceMeasured2 public benchmark observations across 2 boardsMeasured5 public benchmark observations across 5 boards
Input / 1M$2.50$5.00
Output / 1M$10.00$30.00
Pricing statusfreshfresh
Context128K1M
Providers23
Weight accessNo linked weightsNo linked weights

Decision facts

  • GPT-4o (2024-08-06) is #185; GPT-5.5 is #19 on the same current language board.
  • Index scores are 36.8 for GPT-4o (2024-08-06) and 78.7 for GPT-5.5. Their published uncertainty intervals do not overlap, but the aggregate Index does not predict performance on every task; compare the relevant benchmark configurations before choosing.
  • Both positions use Measured evidence.
  • Listed output price per 1M tokens is $10.00 for GPT-4o (2024-08-06) and $30.00 for GPT-5.5. For 1,000 requests with 2,000 input and 500 output tokens each (2M input + 0.5M output), the listed-rate estimate is $10.00 for GPT-4o (2024-08-06) versus $25.00 for GPT-5.5. GPT-4o (2024-08-06) costs 60.0% 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 128,000 tokens for GPT-4o (2024-08-06) and 1,050,000 for GPT-5.5.
  • ModelCap currently lists 2 providers for GPT-4o (2024-08-06) and 3 for GPT-5.5.

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.