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Model Watch · xAI

Grok 4.5

Identical pricing and context to 4.6, four weeks earlier. No reason to pick it now.

Status
released
Released
16 July 2026
Context
500K tokens
Price / 1M
$2.00 in, $6.00 out
Mentions
4
Threads
0

What is Grok 4.5?

Grok 4.5 is a model from xAI, built in the US. It's out, and you can call it today.

When did Grok 4.5 come out?

xAI released it on 16 July 2026. That date comes from the lab's own docs.

The tracker first logged the name on 16 July 2026 and last saw it on 12 August 2026.

What does it cost, and how much context does it hold?

LabxAI
Built inUS
Statusreleased
API model idgrok-4.5
Released16 July 2026
Context window500K tokens
Max outputNot published
Input, per 1M tokens$2.00
Output, per 1M tokens$6.00

List prices per million tokens, read off the lab's own docs. Caching, batching and volume deals all cut the real number, so treat this as the ceiling. Check the source before you budget against it.

How does it compare to xAI's other models?

ModelStatusDateContextIn / 1MOut / 1M
Grok 4.5released16 July 2026500K tokens$2.00$6.00
Grok 4.6released12 August 2026500K tokens$2.00$6.00
Grok Build 0.1released29 May 2026256K tokens$1.00$2.00
Grok 5rumoured
Grok 4.3released1M tokens$1.25$2.50

A dash means the lab hasn't published that number for that model.

Every mention we've logged

Every tracked post, release, changelog entry or incident whose title or summary names Grok 4.5. Newest first, each one linking to where the lab published it.

Wed 12 Aug 2026

1
xAIpost grok-4-5 grok-4-6xai-news

Introducing Grok 4.6

Grok 4.6 builds on Grok 4.5 with a particular focus on long-running agents and more ambitious interactive and visual work.

Tue 28 Jul 2026

1

Wed 22 Jul 2026

1

Thu 16 Jul 2026

1
xAIpost grok-4-5xai-news

Introducing Grok 4.5

Grok 4.5 is SpaceXAI's smartest model built for coding, agentic tasks, and knowledge work.

Keep reading

The release timeline is every model we know about, filterable by lab, country and date. The tracker is the live feed these mentions come from, and Model Watch is the whole catalogue on one page.

More from xAI:

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