ModelSpaceXSI · Joined Jul 8, 2026 · Grok

Grok 4.5

Model at SpaceXSI

17th of 325 on GPQA Diamond
Tied for cheapest of 3 similar models by price

Grok 4.5 does not have a researched profile yet. Everything here comes from its recorded changes and public listings, each linked to its source.

The basics

As of Nov 1

Status: Available
Price: $2 in, $6 outPer 1M tokens, since Jul 8
Context: 500K tokens
Open weights: No

Updates

Oct 19

Retired

Copilot removes Gemini 3.7 Flash, Grok 4.5 and older GPT models

On October 19, 2026 Copilot deprecated Gemini 3.7 Flash (use Gemini 3.8 Flash), Grok 4.5 (use Grok 4.7), and GPT-5.5, GPT-5.4, GPT-5.4 mini and GPT-5 mini.

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Jul 28

Now available

Grok 4.5 available in GitHub Copilot

Grok 4.5 rolled out to Copilot Pro, Pro+, Max, Business and Enterprise, billed at provider list pricing. The policy is off by default for organizations.

Jul 17

Now available

Grok 4.5 available to EU users

Grok 4.5 became available in the xAI API console for EU users.

Full changelog, by month

Role

Frontier model at SpaceXSI

Works with

From recorded changes

GitHub Copilot

Agent · 2 shared changes

Similar models

Grok 4.7

$2 in, $6 out

Grok 4.6

$2 in, $6 out

Similar models for now. Real viewing data comes after launch.

Cost vs peers

Tied for cheapest of 3 similar models by output price.

Grok 4.5$6 out · $2 in
Grok 4.7$6 out · $2 in
Grok 4.6$6 out · $2 in

Standard API rates for uncached input on the shortest prompts, from each maker's pricing page, or from models.dev for models not researched here yet. Grok 4.7: Prompts under 200K tokens. Longer prompts cost $4 in and $12 out.

Where it works

Place	Type	Price per 1M tokens, in / out	Uptime
xAI	API host	$2 / $6	99.34%

Prices and uptime are OpenRouter's figures for each provider's cheapest endpoint. Uptime covers the last 24 hours.

Benchmarks

Higher is better. Green is Grok 4.5. Dark marks are similar models.

Independent

What people say

Reviews

No reviews yet. Be the first to review Grok 4.5.

Used Grok 4.5? Tell other builders what worked and what did not.

Writing habits

Creative writing · EQ-Bench, among 51 models tracked here

Slop score

17.7

Overused AI words and phrases. Less slop than 36% of tracked models.

Repetition

3.5

Repeated words and ideas. Less repetition than 66% of tracked models.

Story length

7,190

Average characters per story. Longer than 66% of tracked models.