Overview
Analysis
DeepSeek V4 Flash 0731 vs GLM 5.3 Flash vs Qwen3.8 Flash vs Muse Spark 1.2 Contributor vs GPT-5.6 Luna Pro: side-by-side summary
DeepSeek V4 Flash 0731, GLM 5.3 Flash, Qwen3.8 Flash, Muse Spark 1.2 Contributor, and GPT-5.6 Luna Pro 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 $0.0434/M tokens input, $0.30/M tokens output on OpenRouter.
GLM 5.3 Flash, from Z.ai, has a 1,048,576-token context window and is priced at $0.0399/M tokens input, $0.0784/M tokens output on OpenRouter.
Qwen3.8 Flash, from Qwen, has a 1,000,000-token context window and is priced at $0.15/M tokens input, $0.47/M tokens output on OpenRouter.
Muse Spark 1.2 Contributor, from Meta, has a 1,048,576-token context window and is priced at $0.10/M tokens input, $0.20/M tokens output on OpenRouter.
GPT-5.6 Luna Pro, 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.
| Attribute | DeepSeek V4 Flash 0731 | GLM 5.3 Flash | Qwen3.8 Flash | Muse Spark 1.2 Contributor | GPT-5.6 Luna Pro |
|---|---|---|---|---|---|
| Context window | 1,048,576 tokens | 1,048,576 tokens | 1,000,000 tokens | 1,048,576 tokens | 1,050,000 tokens |
| Price | $0.0434/M tokens input, $0.30/M tokens output | $0.0399/M tokens input, $0.0784/M tokens output | $0.15/M tokens input, $0.47/M tokens output | $0.10/M tokens input, $0.20/M tokens output | $0.20/M tokens input, $1.20/M tokens output |
| Provided by | DeepSeek | Z.ai | Qwen | Meta | OpenAI |
| Model page | DeepSeek V4 Flash 0731 model details, providers and pricing | GLM 5.3 Flash model details, providers and pricing | Qwen3.8 Flash model details, providers and pricing | Muse Spark 1.2 Contributor model details, providers and pricing | GPT-5.6 Luna Pro model details, providers and pricing |