Grok 4.20
xAI's Grok 4.20 reasoning variant (grok-4.20-0309-reasoning), described on docs.x.ai as "a high-performance model with industry-leading speed and agentic tool calling capabilities" combining "the lowest hallucination rate on the market with strict prompt adherence.".
text + image + file → text · made by xAI
Sold by 14 ways
| Seller | Lane | Rate |
|---|---|---|
| xAI 0 ways | $1per Mtok in$2per Mtok out | |
| xAI apinot on the seller's list today | batch | $1per Mtok in$2per Mtok outdocs.x.ai · read 2026-08-25 |
| Google Vertex AI 0 ways | $1.25per Mtok in$2.5per Mtok out$0.2per Mtok cached | |
| Google Vertex AI cloudnot on the seller's list today | standard | $1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedmodels.dev · read 2026-10-31 |
| Oracle Cloud Infrastructure cloud | standard | $1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedmodels.dev · read 2026-10-31 |
| xAI api | standard | $1.25per Mtok in$2.5per Mtok out$0.2per Mtok cacheddocs.x.ai · read 2026-10-31 |
| Microsoft Azure AI cloud | standard | $2per Mtok in$6per Mtok out$1.25per Mtok cachedmodels.dev · read 2026-10-31 |
| Oracle Cloud Infrastructure cloud | long-context | $2.5per Mtok in$5per Mtok out$0.4per Mtok cachedraw.githubusercontent.com · read 2026-10-31 |
| xAI 0 ways | $2.5per Mtok in$5per Mtok out$0.4per Mtok cached | |
| xAI apinot on the seller's list today | long-context | $2.5per Mtok in$5per Mtok out$0.4per Mtok cacheddocs.x.ai · read 2026-08-25 |
| Nous Research aggregator | standard | $1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedinference-api.nousresearch.com · read 2026-09-12 |
| OpenRouter 3 ways | $1.25per Mtok in$2.5per Mtok out$0.2per Mtok cached | |
| OpenRouter aggregator | standard | $1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedopenrouter.ai · read 2026-08-24 |
| OpenRouter aggregator | xai/priority | $2.5per Mtok in$5per Mtok out$0.4per Mtok cachedopenrouter.ai · read 2026-08-25 |
| OpenRouter aggregator | xai/zdr/priority | $2.5per Mtok in$5per Mtok out$0.4per Mtok cachedopenrouter.ai · read 2026-08-25 |
| Vercel AI Gateway aggregator | standard | $1.25per Mtok in$2.5per Mtok out$0.2per Mtok cachedai-gateway.vercel.sh · read 2026-08-25 |
| Venice AI aggregator | standard | $1.42per Mtok in$2.83per Mtok out$0.23per Mtok cachedmodels.dev · read 2026-10-31 |
| ElectronHub aggregator | standard | $4per Mtok in$8per Mtok outapi.electronhub.ai · read 2026-10-31 |
Measured 39 standings
About
Grok 4.20 — a text model from xAI, sold by 8 companies from $1.25 in and $2.5 out per million tokens, placed 37th of 414 on LMArena · Text.
It takes text, images and files and returns text, with a context window of 2,000,000 tokens. It was published in March 2026, trained on material up to September 2025. Its sellers say it can reason step by step and call a tool. The catalogue files it under reasoning, code and agents. Eight companies sell it. The cheapest is $1.25 in and $2.5 out per million tokens at Nous Research. Beside the standard rate there are faster and separately routed lanes. It has been measured on 39 boards, and stands best at 37th of 414 on LMArena · Text.
Every current figure
- Maker
- xAI
- Register
- model
- Takes
- text + image + file
- Returns
- text
- Context
- 2,000,000 tokens
- Published
- March 2026
- Knowledge to
- September 2025
- Licence
- not read
- Sellers
- 8
- Price
- $1.25 in and $2.5 out per million tokens — Nous Research
- Boards
- 39
- Best place
- 37th of 414 — LMArena · Text
Known as 10 names
grok-4.20-beta1grok-4.20-beta-0309-reasoningGrok 4.2x-ai/grok-4.20spacexai/grok-4.20-reasoningGrok 4.20 Reasoninggrok-4.20-0309-reasoninggrok-4.20-reasoninggrok-4.20-reasoning-latestSpaceXAI: Grok 4.20