Compare
Gemini 3.1 Pro Preview Custom Tools vs Kimi K3
This page is context-first: how much text each model can take in one request. Full specs adds capabilities and limits; the pricing matrix below is only about $/million tokens from hosts that list both models.
Model
Gemini 3.1 Pro Preview Custom Tools
Context window
1.0M
1,048,576 tokens · ~786K words
Model
Kimi K3
Context window
1.0M
1,048,576 tokens · ~786K words
Context window · side by side
Bar length is relative to the larger of the two windows (100% = max of this pair). This is not pricing.
Same context window size for both models.
Gemini 3.1 Pro Preview Custom Tools and Kimi K3 have identical context windows (1048K tokens).
Full specs
Context, output, capabilities, and dates. Green highlights the favorable value where we compute a winner.
| Spec | Gemini 3.1 Pro Preview Custom Tools | Kimi K3 |
|---|---|---|
| Context window | 1,048,576 tokens (1048K) | 1,048,576 tokens (1048K) |
| Max output tokens | 65,536 tokens (65K) | N/A |
| Speed tier | Fast | Balanced |
| Vision | Yes | Yes |
| Function calling | Yes | Yes |
| Extended thinking | Yes | Yes |
| Prompt caching | Yes | Yes |
| Batch API | No | No |
| Release date | Feb 2026 | Jul 2026 |
Pricing matrix
Dollar rates only: hosts that list both models, per 1M tokens. For how much text fits, use the context section above — not this table.
| Provider | Gemini 3.1 Pro Preview Custom Tools in | Gemini 3.1 Pro Preview Custom Tools out | Kimi K3 in | Kimi K3 out |
|---|---|---|---|---|
| $2.00/M | $12.00/M | — | — | |
| Google Vertex | $2.00/M | $12.00/M | — | — |
Frequently asked questions
Powered by Mem0
Use a smaller model.
Get better results.
Mem0 gives your AI long-term memory so you stop re-sending context on every call. That means you can use a smaller, faster, cheaper model — and still get better answers.
Example: a multi-turn chat session
80% less to send — works with any model