DeepSeek V4 Pro vs GPT-4.1 — LLM API Cost Comparison
Compare DeepSeek V4 Pro (DeepSeek) vs GPT-4.1 (OpenAI) on cost per million tokens, context window, and monthly spend.
Prices verified 2026-05-20 · Pricing may change — use the calculator for current estimates
- Input
- $1.74/1M tokens
- Output
- $3.48/1M tokens
- Context
- 1M tokens
- Released
- 2026-03
Latest DeepSeek flagship; 1M context; promo 75% off (≈$0.44/$0.87) until May 31 2026
- Input
- $2/1M tokens
- Output
- $8/1M tokens
- Context
- 1M tokens
- Released
- 2025-04
Recommended production model (replaced GPT-4o); 1M context
Monthly Cost by Usage Tier (70% input / 30% output ratio)
| Usage | DeepSeek V4 Pro | GPT-4.1 | Cheaper by |
|---|---|---|---|
| Light (1M tokens) | $2.26 | $3.80 | DeepSeek V4 Pro (40%) |
| Moderate (10M tokens) | $22.62 | $38.00 | DeepSeek V4 Pro (40%) |
| Heavy (100M tokens) | $226 | $380 | DeepSeek V4 Pro (40%) |
| Very Heavy (1B tokens) | $2,262 | $3,800 | DeepSeek V4 Pro (40%) |
Frequently Asked Questions
Which is cheaper — DeepSeek V4 Pro or GPT-4.1?
For input tokens, DeepSeek V4 Pro is cheaper at $1.74/1M tokens — 1.1× less than $2/1M. For output tokens, DeepSeek V4 Pro wins at $3.48/1M vs $8/1M. At heavy workloads (100M tokens/month), the cost difference can be significant.
What is the context window difference between DeepSeek V4 Pro and GPT-4.1?
DeepSeek V4 Pro supports 1,000,000 tokens per request; GPT-4.1 supports 1,000,000 tokens. DeepSeek V4 Pro wins on context length, making it better for long documents, large codebases, or extended conversations without chunking.
When should I choose DeepSeek V4 Pro over GPT-4.1?
Choose DeepSeek V4 Pro (DeepSeek) if you prefer DeepSeek's ecosystem, tooling, or reliability track record. Latest DeepSeek flagship; 1M context; promo 75% off (≈$0.44/$0.87) until May 31 2026. Choose GPT-4.1 (OpenAI) if Recommended production model (replaced GPT-4o); 1M context. the price/performance fits your workload better. Use this calculator to find the break-even point for your exact token volume.
How much does 1 billion tokens cost on DeepSeek V4 Pro vs GPT-4.1?
At 700M input + 300M output tokens (1B total): DeepSeek V4 Pro costs $2262; GPT-4.1 costs $3800. The difference is $1538/billion tokens at this 70/30 input/output ratio.