DeepSeek V4 Flash 0731 vs GPT-5.6 Luna vs GLM 5.3 Flash

Compare DeepSeek V4 Flash 0731 from DeepSeek, GPT-5.6 Luna from OpenAI, and GLM 5.3 Flash from Z.ai on key metrics including benchmarks, price, context length, and other model features. Access all 3 models and hundreds of others through the OpenRouter API.

DeepSeek V4 Flash 0731 vs GPT-5.6 Luna vs GLM 5.3 Flash: side-by-side summary

DeepSeek V4 Flash 0731, GPT-5.6 Luna, and GLM 5.3 Flash 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 1,310,720-token context window and is priced at $0.05/M tokens input, $0.16/M tokens output on OpenRouter.

GPT-5.6 Luna, from OpenAI, has a 1,050,000-token context window and is priced at $0.20/M tokens input, $1.20/M tokens output on OpenRouter.

GLM 5.3 Flash, from Z.ai, has a 1,310,720-token context window and is priced at $0.075/M tokens input, $0.25/M tokens output on OpenRouter.

Context window: DeepSeek V4 Flash 0731: 1,310,720 tokens
GPT-5.6 Luna: 1,050,000 tokens
GLM 5.3 Flash: 1,310,720 tokens
Price: DeepSeek V4 Flash 0731: $0.05/M tokens input, $0.16/M tokens output
GPT-5.6 Luna: $0.20/M tokens input, $1.20/M tokens output
GLM 5.3 Flash: $0.075/M tokens input, $0.25/M tokens output
Provided by: DeepSeek V4 Flash 0731: DeepSeek
GPT-5.6 Luna: OpenAI
GLM 5.3 Flash: Z.ai

DeepSeek V4 Flash 0731 vs GPT-5.6 Luna vs GLM 5.3 Flash

Compare DeepSeek V4 Flash 0731 from DeepSeek, GPT-5.6 Luna from OpenAI, and GLM 5.3 Flash from Z.ai on key metrics including benchmarks, price, context length, and other model features. Access all 3 models and hundreds of others through the OpenRouter API.