DeepSeek V4-Pro vs Gemini 3.1 Pro: API Pricing
Input and output token rates, context windows, and real monthly cost for DeepSeek V4-Pro (DeepSeek) and Gemini 3.1 Pro (Google), side by side. Prices are standard on-demand rates as of June 2026.
The short answer
For a typical coding-agent workload (60M in / 12M out per month), DeepSeek V4-Pro is the cheaper option at $36.54/mo versus $264/mo for Gemini 3.1 Pro - about 86% less (7.2× cheaper). On the headline sticker of 1M input + 1M output, DeepSeek V4-Pro is $1.30 and Gemini 3.1 Pro is $14.00.
Rates at a glance
| DeepSeek V4-Pro | Gemini 3.1 Pro | |
|---|---|---|
| Input ($/1M tokens) | $0.43 | $2.00 |
| Output ($/1M tokens) | $0.87 | $12.00 |
| Blended (1M in + 1M out) | $1.30 | $14.00 |
| Context window | 1,000K | 1,000K |
| Type | Open-weight | Proprietary |
| Provider | DeepSeek |
Monthly cost by workload
Estimated monthly API spend at each workload's token volume. Output usually costs several times input, so the winner can flip with your mix.
| Workload | DeepSeek V4-Pro | Gemini 3.1 Pro | Cheaper |
|---|---|---|---|
| Chatbot / assistant 10M in / 3M out | $6.96/mo | $56.00/mo | DeepSeek V4-Pro |
| Coding agent 60M in / 12M out | $36.54/mo | $264/mo | DeepSeek V4-Pro |
| RAG / summarization 40M in / 4M out | $20.88/mo | $128/mo | DeepSeek V4-Pro |
| Batch / classification 20M in / 2M out | $10.44/mo | $64.00/mo | DeepSeek V4-Pro |
Want your own in/out split? Use the full interactive comparator to rank every model and provider for your exact workload.
Frequently asked questions
Is DeepSeek V4-Pro or Gemini 3.1 Pro cheaper?
It depends on your input/output mix, but for a typical coding-agent workload (60M in / 12M out per month) DeepSeek V4-Pro costs $36.54/mo versus $264/mo for Gemini 3.1 Pro - about 86% less (7.2x). On the headline sticker (1M input + 1M output), DeepSeek V4-Pro is $1.30 and Gemini 3.1 Pro is $14.00.
What are the token rates for DeepSeek V4-Pro and Gemini 3.1 Pro?
DeepSeek V4-Pro (DeepSeek) is $0.43 per 1M input and $0.87 per 1M output. Gemini 3.1 Pro (Google) is $2.00 per 1M input and $12.00 per 1M output. These are standard on-demand rates, not cached or batch.
Is DeepSeek V4-Pro or Gemini 3.1 Pro open-weight?
DeepSeek V4-Pro is open-weight and Gemini 3.1 Pro is proprietary. Open-weight models can be self-hosted or run on third-party hosts at different rates, so the first-party price shown here is a starting point, not the only option.
What context window do DeepSeek V4-Pro and Gemini 3.1 Pro support?
DeepSeek V4-Pro supports 1,000K tokens and Gemini 3.1 Pro supports 1,000K tokens. Some models also step up pricing past a size threshold - check the source pricing pages for long-context tiers.
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