Qwen3.8 Flash vs Kimi K3: price, context window and capabilities
Qwen3.8 Flash (qwen/qwen3.8-flash) from Qwen and Kimi K3 (moonshotai/kimi-k3) from MoonshotAI are both multimodal language models on the OceanToken API. Qwen3.8 Flash costs less per token than Kimi K3: $0.143 against $3.00 per 1M input tokens (95% less) and $0.447 against $15.00 per 1M output tokens (97% less). Kimi K3 has the larger context window: 1.05M tokens (1,048,576) against 984K (983,616) for Qwen3.8 Flash. Both support tool calling, reasoning, structured outputs, image input and video input.
Side by side
| Spec | Qwen3.8 Flash −25% | Kimi K3 |
|---|---|---|
| Model | Qwen3.8 Flashqwen/ | Kimi K3moonshotai/ |
| Publisher | Qwen | MoonshotAI |
| Kind | Text, vision & video | Text, vision & video |
| Context window | 984K tokens983,616 | 1.05M tokens1,048,576 |
| Input price | $0.143 / 1M tokens | $3.00 / 1M tokens |
| Output price | $0.447 / 1M tokens | $15.00 / 1M tokens |
| Cached input price | $0.016 / 1M tokens | $0.30 / 1M tokens |
| Cache write price | $0.20 / 1M tokens | – |
| Discount (vs official, top tier) | −25% | — |
| Inputs | text, images and video | 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 Qwen3.8 Flash to spend less per token: 95% less for input and 97% less for output than Kimi K3.
- Choose Kimi K3 for the longest inputs: its context window holds 1.05M tokens against 984K for Qwen3.8 Flash.
- Both list the same capabilities: tool calling, reasoning, structured outputs, image input and video input.
- 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 Kimi K3
Frequently asked questions
Which is cheaper, Qwen3.8 Flash or Kimi K3?
Qwen3.8 Flash. Qwen3.8 Flash costs less per token than Kimi K3: $0.143 against $3.00 per 1M input tokens (95% less) and $0.447 against $15.00 per 1M output tokens (97% 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 Kimi K3?
Kimi K3. Kimi K3 has the larger context window: 1.05M tokens (1,048,576) against 984K (983,616) for Qwen3.8 Flash.
Can I call both Qwen3.8 Flash and Kimi K3 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 moonshotai/kimi-k3.
Models and publishers
Qwen3.8 Flash · Kimi K3 · All Qwen models · All MoonshotAI models
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