# Grok 4.3 vs Kimi K2.5

Grok 4.3 is not currently in the Allocate serving catalog, so this page lists no prices for it: every price on this site comes from the live catalog.

## Specifications

| | Grok 4.3 | Kimi K2.5 |
| --- | --- | --- |
| Lab | xAI | Togethercomputer |
| Access | Not served on Allocate | Open weights |
| Context window | n/a | 256K tokens |
| List price, input | Not served | $0.50 / M tokens |
| List price, output | Not served | $2.80 / M tokens |
| Cached input | n/a | n/a |
| License | Proprietary API | Not listed |
| Fine-tunable | No | Yes |

Specifications and provider list prices from the Allocate catalog, checked 2026-07-21.

## Choose Grok 4.3 for

- Freshness-sensitive answers
- Fast reasoning turns
- Research assistants

## Choose Kimi K2.5 for

- Whole-document reasoning
- Long-context retrieval
- Open-weight fine-tuning

## Common questions

### Which has the bigger context window?

Kimi K2.5: 262,144 tokens (256K) against an unlisted window for Grok 4.3.

### Can I fine-tune Grok 4.3 or Kimi K2.5?

Kimi K2.5 publishes open weights (Not listed) and can be fine-tuned on your own data. Grok 4.3 is a closed model served over API; its weights are not available.

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[HTML page](https://allocate.network/compare/grok-4-3-vs-kimi-k2-5) · [Grok 4.3](https://allocate.network/models/grok-4-3.md) · [Kimi K2.5](https://allocate.network/models/kimi-k2-5.md) · [Machine-readable catalog](https://allocate.network/catalog.json)