# Grok 4.5 vs Grok 4.6

On provider list prices, Grok 4.5 costs $2 per million input tokens against $2 for Grok 4.6: effectively level. Output is $6 against $6.

## Specifications

| | Grok 4.5 | Grok 4.6 |
| --- | --- | --- |
| Lab | SpaceXAI | SpaceXAI |
| Access | API only | API only |
| Context window | 500K tokens | 500K tokens |
| List price, input | $2 / M tokens | $2 / M tokens |
| List price, output | $6 / M tokens | $6 / M tokens |
| Cached input | $0.30 / M tokens | $0.50 / M tokens |
| License | Proprietary API | Proprietary API |
| Fine-tunable | No | No |

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

## What the numbers say

Take 1,000,000 requests a month at 1,200 input and 350 output tokens each. That workload costs $4,500 a month on Grok 4.5 and $4,500 on Grok 4.6 at list: a gap of $0.

## Choose Grok 4.5 for

- Frontier serving with no weights to manage

## Choose Grok 4.6 for

- Frontier serving with no weights to manage

## Common questions

### Which is cheaper, Grok 4.5 or Grok 4.6?

Grok 4.5, on this workload shape. At list prices it is $2/$6 per million tokens in and out against $2/$6 for Grok 4.6. Billed on Allocate: $2.14/$6.42 against $2.14/$6.42.

### Which has the bigger context window?

They match: both read 500,000 tokens (500K) per request.

### Can I fine-tune Grok 4.5 or Grok 4.6?

No. Both are closed models served over API. If you want a model you can train and own, start from an open-weights base in the catalog.

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[HTML page](https://allocate.network/compare/xai-grok-4-5-vs-xai-grok-4-6) · [Grok 4.5](https://allocate.network/models/xai-grok-4-5.md) · [Grok 4.6](https://allocate.network/models/xai-grok-4-6.md) · [Machine-readable catalog](https://allocate.network/catalog.json)