Model decision surface
Compare AI models
Start with GPT-5.6 Terra and Grok 4.6, 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-5.6 Terra vs Grok 4.6
Live dataset updated 8/17/2026, 11:13:20 PM UTC
Open 1200×630 evidence receipt| Field | GPT-5.6 Terra OpenAI | Grok 4.6 xAI |
|---|---|---|
| ModelCap position | #12 | #10 |
| Index score | 73.7 | 74.4 |
| Evidence | Measured6 public benchmark observations across 6 boards | Measured5 public benchmark observations across 5 boards |
| Input / 1M | $2.00 | $2.00 |
| Output / 1M | $12.00 | $6.00 |
| Pricing status | fresh | fresh |
| Context | 1M | 500K |
| Providers | 3 | 1 |
| Weight access | API only | API only |
Decision facts
- GPT-5.6 Terra is #12; Grok 4.6 is #10 on the same current language board.
- Index scores are 73.7 for GPT-5.6 Terra and 74.4 for Grok 4.6.
- Both positions use Measured evidence.
- Listed output price per 1M tokens is $12.00 for GPT-5.6 Terra and $6.00 for Grok 4.6.
- Published context is 1,050,000 tokens for GPT-5.6 Terra and 500,000 for Grok 4.6.
- ModelCap currently lists 3 providers for GPT-5.6 Terra and 1 for Grok 4.6.
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.