DeepSeek V4 Pro vs GPT-5.1
2026 Stored listed rates & illustrative token-cost comparison
GPT-5.1
Deprecated
Deprecated endpoints may still be callable. Migrate before retirement. Retirement: 2027-04-01
Replacement reference: gpt-6-solIllustrative Listed-Rate Difference
DeepSeek V4 Pro about 68% lower
1M input + 200K output tokens; not a monthly bill
📌 Executive Summary (TL;DR):Under a standard baseline of 1M input + 200K output tokens, DeepSeek V4 Pro lists approximately 68% lower than GPT-5.1. For high-throughput production workloads, DeepSeek V4 Pro delivers superior unit economics; model your specific monthly workload below before migrating.(Price records last updated 2026-10-11 (UTC))
💡 10M Monthly Token Workload Simulation
Simulating a production workload (10M input + 2M output tokens): DeepSeek V4 Pro listed rate totals ~$10.56, while GPT-5.1 totals ~$32.50. Switching to DeepSeek V4 Pro yields ~$21.94/mo in raw token savings.
Metric
DeepSeek V4 Pro (DeepSeek)
GPT-5.1 (OpenAI)
Input listed rate
$0.66 / 1M Tokens
$1.25 / 1M Tokens
Output listed rate
$1.98 / 1M Tokens
$10.00 / 1M Tokens
Cached Input rate
$0.02 / 1M Tokens
$0.13 / 1M Tokens
Context Window
1000K Tokens
400K Tokens
Modality
llm
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