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DeepSeek V4 Pro vs GPT-5
DeepSeek's budget powerhouse undercuts OpenAI's premium by up to 91%. Same context window size? No — DeepSeek has 3.7x more. Is premium worth 6x the price?
Pricing data verified: Jun 29, 2026
| Specification | DeepSeek V4 Pro | GPT-5 (OpenAI) |
|---|---|---|
| Input Price (per 1M tokens) | $0.435 | $1.25 |
| Output Price (per 1M tokens) | $0.87 | $10.00 |
| Context Window | 1M tokens | 272K tokens |
| Tier | Budget | Premium |
| Provider | DeepSeek | OpenAI |
Calculate Your Exact Costs
Budget pricing that undercuts premium by 86% — see the massive savings for your workload.
Which Model for Which Use Case?
High-Volume Chatbots
Thousands of daily conversations. DeepSeek V4 Pro's 91% cheaper output pricing makes it the obvious choice — you save 86% vs GPT-5 at scale.
Mission-Critical Production
Systems where downtime or errors have serious consequences. GPT-5's proven reliability and OpenAI's SLA may justify the premium for production workloads.
Long Document Processing
Legal contracts, research papers, large codebases. DeepSeek V4 Pro's 1M context window handles documents 3.7x larger than GPT-5's 272K limit.
Enterprise with Compliance Needs
Data residency, SOC 2, enterprise SLAs. OpenAI's enterprise offering may be required for compliance. DeepSeek's Chinese origin raises data residency questions for some orgs.
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Frequently Asked Questions
How much cheaper is DeepSeek V4 Pro than GPT-5?
DeepSeek V4 Pro costs $0.435/$0.87 per 1M tokens. GPT-5 costs $1.25/$10.00 per 1M tokens. DeepSeek is 65% cheaper on input and 91% cheaper on output — an 86% overall savings for most workloads.
Which has a larger context window?
DeepSeek V4 Pro has a 1M token context window, while GPT-5 has a 272K token context window. DeepSeek offers 3.7x the context — important if you process long documents or need extensive conversation history.
When should I choose DeepSeek V4 Pro over GPT-5?
Choose DeepSeek V4 Pro when cost matters — it's 65-91% cheaper with a larger context window. Choose GPT-5 when you need OpenAI's ecosystem, proven reliability, or enterprise compliance guarantees.
Is DeepSeek V4 Pro as good as GPT-5?
DeepSeek V4 Pro offers competitive quality at 86% lower cost. For chatbots, content generation, and code assistance, it performs comparably. Main differences: ecosystem, reliability track record, and data residency considerations with a Chinese provider.
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