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DeepSeek: DeepSeek V4 Flash Vision Exp vs OpenAI: GPT-6.1 Sol Pro

DeepSeek: DeepSeek V4 Flash Vision Exp is 13× cheaper for the sample workload; OpenAI: GPT-6.1 Sol Pro has the larger context window.

MetricDeepSeek: DeepSeek V4 Flash Vision ExpOpenAI: GPT-6.1 Sol Pro
Model IDdeepseek/deepseek-v4-flash-vision-expopenai/gpt-6.1-sol-pro
Prompt price$0.2156 / 1M tokens$2.00 / 1M tokens
Completion price$0.6468 / 1M tokens$10.00 / 1M tokens
Context1,048,576 tokens1,050,000 tokens
Tool calling✓✓
Structured outputs✓✓
Reasoning✓✓
Response format✓✓
Web search––
Input modalitiestext, imagefile, image, text
Output modalitiestexttext
Added2026-08-212026-09-29

Sample workload

Chat app: 1,000 prompt + 500 completion tokens × 100 requests per day.

CostDeepSeek: DeepSeek V4 Flash Vision ExpOpenAI: GPT-6.1 Sol Pro
Per day$0.0539$0.70
Per 30 days$1.62$21.00

Difference: $0.65 per day and $19.38 per 30 days.

Data updated 2026-10-30