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  1. Home
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DeepSeek V4 Flash 0731 vs Kimi K3

Compare DeepSeek V4 Flash 0731 from DeepSeek and Kimi K3 from moonshotai on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

Favicon for deepseek
DeepSeek V4 Flash 0731
Favicon for moonshotai
Kimi K3
Favicon for deepseek
DeepSeek V4 Flash 0731
Favicon for moonshotai
Kimi K3

Overview

DeepSeek V4 Flash 0731
Author
DeepSeek
Kimi K3
Author
moonshotai
DeepSeek V4 Flash 0731
Context length
1.05Mtokens
Kimi K3
Context length
1.05Mtokens
DeepSeek V4 Flash 0731
Reasoning
Kimi K3
Reasoning
DeepSeek V4 Flash 0731
Input modalities
Kimi K3
Input modalities
DeepSeek V4 Flash 0731
Output modalities
Kimi K3
Output modalities

DeepSeek V4 Flash 0731 vs Kimi K3: side-by-side summary

DeepSeek V4 Flash 0731 and Kimi K3 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

DeepSeek V4 Flash 0731, from DeepSeek, has a 1,048,576-token context window and is priced at $0.0475/M tokens input, $0.1568/M tokens output on OpenRouter.

Kimi K3, from moonshotai, has a 1,048,576-token context window and is priced at $0.238/M tokens input, $16/M tokens output on OpenRouter.

Context window
  • DeepSeek V4 Flash 0731: 1,048,576 tokens
  • Kimi K3: 1,048,576 tokens
Price
  • DeepSeek V4 Flash 0731: $0.0475/M tokens input, $0.1568/M tokens output
  • Kimi K3: $0.238/M tokens input, $16/M tokens output
Provided by
  • DeepSeek V4 Flash 0731: DeepSeek
  • Kimi K3: moonshotai
  • DeepSeek V4 Flash 0731 model details, providers and pricing
  • Kimi K3 model details, providers and pricing

DeepSeek V4 Flash 0731 vs Kimi K3 at a glance

DeepSeek V4 Flash 0731 vs Kimi K3 comparison
AttributeDeepSeek V4 Flash 0731Kimi K3
Input price$0.0475/M tokens$0.238/M tokens
Output price$0.1568/M tokens$16/M tokens
Context window1,048,576 tokens1,048,576 tokens
Intelligence Index34.343.6
Coding Index69.176.2
Agentic Index41.050.0
Latency (p50)0.40 s0.76 s
Throughput (p50)75.0 tok/s56.0 tok/s

Benchmark data updated Oct 13, 2026

Frequently asked questions

Is DeepSeek V4 Flash 0731 cheaper than Kimi K3?

DeepSeek V4 Flash 0731 is cheaper than Kimi K3 on OpenRouter: DeepSeek V4 Flash 0731 costs $0.0475/M tokens input and $0.1568/M tokens output, while Kimi K3 costs $0.238/M tokens input and $16/M tokens output.

Which has the longer context window, DeepSeek V4 Flash 0731 or Kimi K3?

DeepSeek V4 Flash 0731 and Kimi K3 have the same context window of 1,048,576 tokens.

Which is faster, DeepSeek V4 Flash 0731 or Kimi K3?

DeepSeek V4 Flash 0731 is faster on OpenRouter, generating a median 75.0 tokens per second compared with 56.0 tokens per second for Kimi K3.

Which scores higher on coding, DeepSeek V4 Flash 0731 or Kimi K3?

Kimi K3 scores higher on coding, with an Artificial Analysis Coding Index of 76.2 compared with 69.1 for DeepSeek V4 Flash 0731.