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Decision facts

• DeepSeek V4 Flash Vision Exp is #23; GPT-5.5 is #9 on the same current language board.
• Index scores are 71.2 for DeepSeek V4 Flash Vision Exp and 79.8 for GPT-5.5. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.
• Evidence differs: DeepSeek V4 Flash Vision Exp is Estimated; GPT-5.5 is Measured.
• Listed output price per 1M tokens is $0.66 for DeepSeek V4 Flash Vision Exp 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 $0.77 for DeepSeek V4 Flash Vision Exp versus $25.00 for GPT-5.5. DeepSeek V4 Flash Vision Exp costs 96.9% 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 1,048,576 tokens for DeepSeek V4 Flash Vision Exp and 1,050,000 for GPT-5.5.
• Weight access differs: DeepSeek V4 Flash Vision Exp is open; GPT-5.5 is none.
• ModelCap currently lists 6 providers for DeepSeek V4 Flash Vision Exp 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.