# Cogito v2.1 671B vs Grok 4.3

Cogito v2.1 671B and Grok 4.3 are not currently in the Allocate serving catalog, so this page lists no prices for them: every price on this site comes from the live catalog.

## Specifications

| | Cogito v2.1 671B | Grok 4.3 |
| --- | --- | --- |
| Lab | Deep Cogito | xAI |
| Access | Not served on Allocate | Not served on Allocate |
| Context window | n/a | n/a |
| List price, input | Not served | Not served |
| List price, output | Not served | Not served |
| Cached input | n/a | n/a |
| License | Not listed | Proprietary API |
| Fine-tunable | Yes | No |

Specifications and provider list prices from the Allocate catalog, checked 2026-09-12.

## Choose Cogito v2.1 671B for

- Long reasoning chains
- Open-weight agents
- Self-hosted reasoning

## Choose Grok 4.3 for

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

## Common questions

### Can I fine-tune Cogito v2.1 671B or Grok 4.3?

Cogito v2.1 671B 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/deepcogito-cogito-v2-1-671b-vs-grok-4-3) · [Cogito v2.1 671B](https://allocate.network/models/deepcogito-cogito-v2-1-671b.md) · [Grok 4.3](https://allocate.network/models/grok-4-3.md) · [Machine-readable catalog](https://allocate.network/catalog.json)