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.


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.
| Attribute | DeepSeek V4.1 Flash | GPT-6 Luna |
|---|---|---|
| Input price | $0.07/M tokens | $0.10/M tokens |
| Output price | $0.50/M tokens | $0.50/M tokens |
| Context window | 1,048,576 tokens | 1,050,000 tokens |
| Intelligence Index | 24.7 | 38.1 |
| Coding Index | Not available | Not available |
| Agentic Index | Not available | Not available |
| Latency (p50) | 1.51 s | 2.42 s |
| Throughput (p50) | 37.0 tok/s | 59.0 tok/s |
Benchmark data updated
GPT-6 Luna has the longer context window at 1,050,000 tokens, compared with 1,048,576 tokens for DeepSeek V4.1 Flash.
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.