DeepSeek V4 Flash vs Gemini 3.1 Flash Lite Preview, API pricing and model comparison

Compare DeepSeek V4 Flash vs Gemini 3.1 Flash Lite Preview side by side by input/output token price, context window, benchmark signals, capabilities, and example monthly API cost.

Quick comparison summary

This page compares DeepSeek V4 Flash vs Gemini 3.1 Flash Lite Preview in one matrix. Current records: DeepSeek V4 Flash on OpenRouter: $0.0983/$0.1966 per 1M tokens, 1049K context window; Gemini 3.1 Flash Lite Preview on OpenRouter: $0.25/$1.5 per 1M tokens, 1049K context window. Prices are estimates—verify official provider pages before production use.

V4 Flash

deepseek/deepseek-v4-flash

OpenRouter

Input: $0.0983 / 1M
Output: $0.1966 / 1M
Context: 1.0m
Model page: Details

Gemini 3.1 Flash Lite Preview

google/gemini-3.1-flash-lite-preview

OpenRouter

Input: $0.2500 / 1M
Output: $1.50 / 1M
Context: 1.0m
Model page: Details

Comparison matrixLLM Table

Models to compare2/4

Model 1

1.0M

Select model344 models

Model 2

1.0M

Select model344 models

DeepSeek: DeepSeek V4 Flash

OpenRouter

Cheapest (this scenario)

Input

$0.0983 / 1M

Output

$0.1966 / 1M

Context

1.0MLargest context

Monthly cost

$15.73

Benchmark

1,437Top benchmarkLMArena Text Arena

ToolsJSONReasoningLong context

Google: Gemini 3.1 Flash Lite Preview

OpenRouter

Input

$0.2500 / 1M

Output

$1.50 / 1M

Context

1.0MLargest context

Monthly cost

$70.00

Benchmark

1,433LMArena Text Arena

VisionToolsJSONReasoningAudioLong context

DeepSeek: DeepSeek V4 Flash

OpenRouter

Google: Gemini 3.1 Flash Lite Preview

OpenRouter

Input

$0.0983 / 1MCheapest (this scenario)

$0.2500 / 1M

Output

$0.1966 / 1MCheapest (this scenario)

$1.50 / 1M

Context

1.0MLargest context

Benchmark

1,437Top benchmark

LMArena Text Arena

1,433

LMArena Text Arena

Monthly cost

$15.73Cheapest (this scenario)

$70.00

Capabilities

ToolsJSONReasoningLong context

VisionToolsJSONReasoningAudioLong context

FAQ

Model comparison notes

How do DeepSeek V4 Flash vs Gemini 3.1 Flash Lite Preview API prices compare?

Compare input and output prices per 1M tokens side by side. The same underlying model can list different prices by route (Direct API vs OpenRouter); this table uses the selected route records.

Which model looks cheaper?

Scenario cost depends on your input/output mix. The example monthly cost in the table uses default token volumes—adjust with the cost calculator for your traffic.

Are benchmark scores included?

Independent or provider-reported benchmark signals appear when available. Benchmarks do not replace price analysis—evaluate both for your quality requirements.

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