# DeepSeek V4 vs Gemini 3.1 Pro

On provider list prices, DeepSeek V4 costs $1.74 per million input tokens against $2 for Gemini 3.1 Pro: 1.1x apart. Output is $3.48 against $12 (3.4x). On Allocate both bill at list plus the 7% transaction fee.

## Specifications

| | DeepSeek V4 | Gemini 3.1 Pro |
| --- | --- | --- |
| Lab | Deepseek | Google |
| Access | API only | API only |
| Context window | 512K tokens | 1M tokens |
| List price, input | $1.74 / M tokens | $2 / M tokens |
| List price, output | $3.48 / M tokens | $12 / M tokens |
| Cached input | $0.20 / M tokens | n/a |
| License | Proprietary API | Proprietary API |
| Fine-tunable | No | No |

Specifications and provider list prices from the Allocate catalog, checked 2026-07-08. Billed price is list plus the 7% transaction fee.

## What the numbers say

Take 1,000,000 requests a month at 1,200 input and 350 output tokens each. That workload costs $3,306 a month on DeepSeek V4 and $6,600 on Gemini 3.1 Pro at list: a gap of $3,294, or 2.0x.

Gemini 3.1 Pro reads 1M tokens per request against 512K for DeepSeek V4, 2.0x the window. That decides which one can take whole documents without splitting them.

## Choose DeepSeek V4 for

- Reasoning-heavy agents
- Long-document analysis
- Cost-sensitive production routes

## Choose Gemini 3.1 Pro for

- Judgment-heavy workflows
- Long-context analysis
- Escalation tier above Flash

## Common questions

### Which is cheaper, DeepSeek V4 or Gemini 3.1 Pro?

DeepSeek V4, on this workload shape. At list prices it is $1.74/$3.48 per million tokens in and out against $2/$12 for Gemini 3.1 Pro. Billed on Allocate: $1.86/$3.72 against $2.14/$12.84, list plus 7%.

### Which has the bigger context window?

Gemini 3.1 Pro: 1,000,000 tokens (1M) against 512,000 (512K) for DeepSeek V4.

### Can I fine-tune DeepSeek V4 or Gemini 3.1 Pro?

No. Both are closed models served over API. If you want a model you can train and own, start from an open-weights base in the catalog.

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[HTML page](https://allocate.network/compare/deepseek-v4-vs-google-gemini-3-1-pro) · [DeepSeek V4](https://allocate.network/models/deepseek-v4.md) · [Gemini 3.1 Pro](https://allocate.network/models/google-gemini-3-1-pro.md) · [Machine-readable catalog](https://allocate.network/catalog.json)