Model decision surface
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Start with GPT-5.1-Codex-Max 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-5.1-Codex-Max vs GPT-5.5
Live dataset updated 8/17/2026, 11:13:20 PM UTC
Open 1200×630 evidence receipt| Field | GPT-5.1-Codex-Max OpenAI | GPT-5.5 OpenAI |
|---|---|---|
| ModelCap position | #109 | #8 |
| Index score | 22.5 | 76.9 |
| Evidence | Estimatedpublisher corpus prior · leave-one-anchor-out calibrated | Measured6 public benchmark observations across 6 boards |
| Input / 1M | $1.25 | $5.00 |
| Output / 1M | $10.00 | $30.00 |
| Pricing status | fresh | fresh |
| Context | 400K | 1M |
| Providers | 1 | 3 |
| Weight access | API only | API only |
Decision facts
- GPT-5.1-Codex-Max is #109; GPT-5.5 is #8 on the same current language board.
- Index scores are 22.5 for GPT-5.1-Codex-Max and 76.9 for GPT-5.5.
- Evidence differs: GPT-5.1-Codex-Max is Estimated; GPT-5.5 is Measured.
- Listed output price per 1M tokens is $10.00 for GPT-5.1-Codex-Max and $30.00 for GPT-5.5.
- Published context is 400,000 tokens for GPT-5.1-Codex-Max and 1,050,000 for GPT-5.5.
- ModelCap currently lists 1 providers for GPT-5.1-Codex-Max 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.
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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.