GPT-6 Luna Pro vs Qwen3.8 27B: price, context window and capabilities
GPT-6 Luna Pro (openai/gpt-6-luna-pro) from OpenAI and Qwen3.8 27B (qwen/qwen3.8-27b) from Qwen are both multimodal language models on the OceanToken API. GPT-6 Luna Pro costs less per token than Qwen3.8 27B: $0.10 against $0.425 per 1M input tokens (76% less) and $0.50 against $2.55 per 1M output tokens (80% less). GPT-6 Luna Pro has the larger context window: 1.05M tokens (1,050,000) against 1.02M (1,024,000) for Qwen3.8 27B. Both support tool calling, reasoning, structured outputs and image input; only GPT-6 Luna Pro also lists file input; only Qwen3.8 27B also lists video input.
Side by side
| Spec | GPT-6 Luna Pro | Qwen3.8 27B |
|---|---|---|
| Model | GPT-6 Luna Proopenai/ | Qwen3.8 27Bqwen/ |
| Publisher | OpenAI | Qwen |
| Kind | Text & vision | Text, vision & video |
| Context window | 1.05M tokens1,050,000 | 1.02M tokens1,024,000 |
| Input price | $0.10 / 1M tokens | $0.425 / 1M tokens |
| Output price | $0.50 / 1M tokens | $2.55 / 1M tokens |
| Cached input price | $0.01 / 1M tokens | $0.085 / 1M tokens |
| Cache write price | $0.125 / 1M tokens | $0.531 / 1M tokens |
| Web search price | $0.01 / search | – |
| Inputs | text, images and files | text, images and video |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Choose GPT-6 Luna Pro to spend less per token: 76% less for input and 80% less for output than Qwen3.8 27B.
- Choose GPT-6 Luna Pro for the longest inputs: its context window holds 1.05M tokens against 1.02M for Qwen3.8 27B.
- Choose GPT-6 Luna Pro if you need file input: Qwen3.8 27B does not list it.
- Not sure? Call both with the same OceanToken API key and compare them on your own prompts; each request is billed per use from one prepaid balance.
Get API Key GPT-6 Luna Pro Qwen3.8 27B
Frequently asked questions
Which is cheaper, GPT-6 Luna Pro or Qwen3.8 27B?
GPT-6 Luna Pro. GPT-6 Luna Pro costs less per token than Qwen3.8 27B: $0.10 against $0.425 per 1M input tokens (76% less) and $0.50 against $2.55 per 1M output tokens (80% less). These are OceanToken starting prices per use; the OceanToken console always shows the current price.
Which has the larger context window, GPT-6 Luna Pro or Qwen3.8 27B?
GPT-6 Luna Pro. GPT-6 Luna Pro has the larger context window: 1.05M tokens (1,050,000) against 1.02M (1,024,000) for Qwen3.8 27B.
Can I call both GPT-6 Luna Pro and Qwen3.8 27B with one API key?
Yes. Both are on the OceanToken API at https://api.oceantoken.ai/v1: one API key and one prepaid balance call either model. Send the model id openai/gpt-6-luna-pro or qwen/qwen3.8-27b.
Models and publishers
GPT-6 Luna Pro · Qwen3.8 27B · All OpenAI models · All Qwen models
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