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  1. Home
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DeepSeek V4.1 Flash vs GPT-6 Luna

Compare DeepSeek V4.1 Flash from DeepSeek and GPT-6 Luna from OpenAI 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 V4.1 Flash
Favicon for openai
GPT-6 Luna
Favicon for deepseek
DeepSeek V4.1 Flash
Favicon for openai
GPT-6 Luna

Overview

DeepSeek V4.1 Flash
Author
DeepSeek
GPT-6 Luna
Author
OpenAI
DeepSeek V4.1 Flash
Context length
1.05Mtokens
GPT-6 Luna
Context length
1.05Mtokens
DeepSeek V4.1 Flash
Reasoning
GPT-6 Luna
Reasoning
DeepSeek V4.1 Flash
Input modalities
GPT-6 Luna
Input modalities
DeepSeek V4.1 Flash
Output modalities
GPT-6 Luna
Output modalities

DeepSeek V4.1 Flash vs GPT-6 Luna: side-by-side summary

DeepSeek V4.1 Flash and GPT-6 Luna are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

DeepSeek V4.1 Flash, from DeepSeek, has a 1,048,576-token context window and is priced at $0.07/M tokens input, $0.50/M tokens output on OpenRouter.

GPT-6 Luna, from OpenAI, has a 1,050,000-token context window and is priced at $0.10/M tokens input, $0.50/M tokens output on OpenRouter.

Context window
  • DeepSeek V4.1 Flash: 1,048,576 tokens
  • GPT-6 Luna: 1,050,000 tokens
Price
  • DeepSeek V4.1 Flash: $0.07/M tokens input, $0.50/M tokens output
  • GPT-6 Luna: $0.10/M tokens input, $0.50/M tokens output
Provided by
  • DeepSeek V4.1 Flash: DeepSeek
  • GPT-6 Luna: OpenAI
  • DeepSeek V4.1 Flash model details, providers and pricing
  • GPT-6 Luna model details, providers and pricing

DeepSeek V4.1 Flash vs GPT-6 Luna at a glance

DeepSeek V4.1 Flash vs GPT-6 Luna comparison
AttributeDeepSeek V4.1 FlashGPT-6 Luna
Input price$0.07/M tokens$0.10/M tokens
Output price$0.50/M tokens$0.50/M tokens
Context window1,048,576 tokens1,050,000 tokens
Intelligence Index24.738.1
Coding IndexNot availableNot available
Agentic IndexNot availableNot available
Latency (p50)1.51 s2.42 s
Throughput (p50)37.0 tok/s59.0 tok/s

Benchmark data updated Oct 15, 2026

Frequently asked questions

Which has the longer context window, DeepSeek V4.1 Flash or GPT-6 Luna?

GPT-6 Luna has the longer context window at 1,050,000 tokens, compared with 1,048,576 tokens for DeepSeek V4.1 Flash.

Which is faster, DeepSeek V4.1 Flash or GPT-6 Luna?

GPT-6 Luna is faster on OpenRouter, generating a median 59.0 tokens per second compared with 37.0 tokens per second for DeepSeek V4.1 Flash.