Qwen3.8 Flash vs GPT-6 Luna Pro: price, context window and capabilities
Qwen3.8 Flash (qwen/qwen3.8-flash) from Qwen and GPT-6 Luna Pro (openai/gpt-6-luna-pro) from OpenAI are both multimodal language models on the OceanToken API. Qwen3.8 Flash costs less for output: $0.447 against $0.50 per 1M output tokens (11% less); GPT-6 Luna Pro costs less for input: $0.10 against $0.143 per 1M input tokens (30% less). GPT-6 Luna Pro has the larger context window: 1.05M tokens (1,050,000) against 984K (983,616) for Qwen3.8 Flash. Both support tool calling, reasoning, structured outputs and image input; only Qwen3.8 Flash also lists video input; only GPT-6 Luna Pro also lists file input.
Side by side
| Spec | Qwen3.8 Flash −25% | GPT-6 Luna Pro |
|---|---|---|
| Model | Qwen3.8 Flashqwen/ | GPT-6 Luna Proopenai/ |
| Publisher | Qwen | OpenAI |
| Kind | Text, vision & video | Text & vision |
| Context window | 984K tokens983,616 | 1.05M tokens1,050,000 |
| Input price | $0.143 / 1M tokens | $0.10 / 1M tokens |
| Output price | $0.447 / 1M tokens | $0.50 / 1M tokens |
| Cached input price | $0.016 / 1M tokens | $0.01 / 1M tokens |
| Cache write price | $0.20 / 1M tokens | $0.125 / 1M tokens |
| Web search price | – | $0.01 / search |
| Discount (vs official, top tier) | −25% | — |
| Inputs | text, images and video | text, images and files |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Price depends on the mix: Qwen3.8 Flash costs less for output and GPT-6 Luna Pro for input, so estimate both on your own volume of input tokens and output tokens.
- Choose GPT-6 Luna Pro for the longest inputs: its context window holds 1.05M tokens against 984K for Qwen3.8 Flash.
- Choose Qwen3.8 Flash if you need video input: GPT-6 Luna Pro 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 Qwen3.8 Flash GPT-6 Luna Pro
Frequently asked questions
Which is cheaper, Qwen3.8 Flash or GPT-6 Luna Pro?
It depends on the mix of tokens. Qwen3.8 Flash costs less for output: $0.447 against $0.50 per 1M output tokens (11% less); GPT-6 Luna Pro costs less for input: $0.10 against $0.143 per 1M input tokens (30% less). These are OceanToken starting prices per use; the OceanToken console always shows the current price.
Which has the larger context window, Qwen3.8 Flash or GPT-6 Luna Pro?
GPT-6 Luna Pro. GPT-6 Luna Pro has the larger context window: 1.05M tokens (1,050,000) against 984K (983,616) for Qwen3.8 Flash.
Can I call both Qwen3.8 Flash and GPT-6 Luna Pro 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 qwen/qwen3.8-flash or openai/gpt-6-luna-pro.
Models and publishers
Qwen3.8 Flash · GPT-6 Luna Pro · All Qwen models · All OpenAI models
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