Kimi K2.5 vs Mistral Medium 3.5: price, context window and capabilities
Kimi K2.5 (moonshotai/kimi-k2.5) from MoonshotAI and Mistral Medium 3.5 (mistralai/mistral-medium-3-5) from Mistral are both multimodal language models on the OceanToken API. Kimi K2.5 costs less per token than Mistral Medium 3.5: $0.60 against $1.50 per 1M input tokens (60% less) and $3.00 against $7.50 per 1M output tokens (60% less). Both have a 262K-token context window (262,144 tokens). Both support tool calling, reasoning, structured outputs and image input; only Mistral Medium 3.5 also lists file input.
Side by side
| Spec | Kimi K2.5 | Mistral Medium 3.5 |
|---|---|---|
| Model | Kimi K2.5moonshotai/ | Mistral Medium 3.5mistralai/ |
| Publisher | MoonshotAI | Mistral |
| Kind | Text & vision | Text & vision |
| Context window | 262K tokens262,144 | 262K tokens262,144 |
| Input price | $0.60 / 1M tokens | $1.50 / 1M tokens |
| Output price | $3.00 / 1M tokens | $7.50 / 1M tokens |
| Cached input price | $0.10 / 1M tokens | – |
| Inputs | text and images | 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?
- Choose Kimi K2.5 to spend less per token: 60% less for input and 60% less for output than Mistral Medium 3.5.
- Context size does not separate them: both hold about 262K tokens.
- Choose Mistral Medium 3.5 if you need file input: Kimi K2.5 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 Kimi K2.5 Mistral Medium 3.5
Frequently asked questions
Which is cheaper, Kimi K2.5 or Mistral Medium 3.5?
Kimi K2.5. Kimi K2.5 costs less per token than Mistral Medium 3.5: $0.60 against $1.50 per 1M input tokens (60% less) and $3.00 against $7.50 per 1M output tokens (60% less). These are OceanToken starting prices per use; the OceanToken console always shows the current price.
Which has the larger context window, Kimi K2.5 or Mistral Medium 3.5?
Neither. Both have a 262K-token context window (262,144 tokens).
Can I call both Kimi K2.5 and Mistral Medium 3.5 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 moonshotai/kimi-k2.5 or mistralai/mistral-medium-3-5.
Models and publishers
Kimi K2.5 · Mistral Medium 3.5 · All MoonshotAI models · All Mistral models
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