# Grok 4.20 0309 Reasoning — price & specs

Source: https://modelbank.ai/models/grok-4.20-0309-reasoning · updated 2026-11-01 · ModelBank

| Field | Value |
|---|---|
| Vendor | xAI |
| Input price | $1.25 / 1M tokens |
| Output price | $2.5 / 1M tokens |
| Cached input | $0.2 / 1M tokens |
| Context window | 1,000,000 tokens |
| Max output | 30,000 tokens |
| Input modalities | text,image,pdf |
| Reasoning / tool use | yes / yes |
| Intelligence / coding index | — / — |
| Released | 2026-10-16 |
| Retirement date | none announced |

## About

Grok 4.20 0309 Reasoning was spotted by ModelBank Radar in official sources (Official model / pricing page) and confirmed on the vendor's own pages. Pricing, context window and capabilities are filled in automatically as soon as the vendor or a major catalog publishes them.

## Price history

- 2026-10-16: $1.25 in / $2.5 out


JSON: https://modelbank.ai/api/v1/models/grok-4.20-0309-reasoning