identity

proprietary
xAI logo

grok-4.5xAI

from /1M in$2.00xai corp.
context500Ktokens
best ttft1.51sxai corp.
endpoints11 region
endpoints
1
regions
1
best tok/s
68
api
chat
released
July 2026

capabilities 6/8

visionreasoningtoolscachingweb searchjson schemacomputer useimage gen

endpoints

1 / 1 region
Providers serving grok-4.5, with pricing and measured performance. Best value in each column is coloured.
#flags
1xAI Corp.Global500K$2.00$6.00$0.501.51s68.0zdr
provider price, no markupper 1M tokensblank where no qualifying sample

measured

through Sep 12
median
923ms1.34s1.75s07-0608-0309-07992ms
hover the plot for weekly values
time to first token per provider: current value, window low and high, and change across the window
providernowlowhighchange
xAI Corp.1.51s992ms1.68s-39%

median wait before the first token lands. this is the number a user feels, and it moves with provider load through the day.

Lines are steps: each sample is one week of traffic held flat, not a slide from the week before. Click a name in the key to drop it from the plot. Measured through Sep 12.

benchmarks

artificial analysis
Benchmark scores, each normalised to 100
evalScore as a share of 100/100
GPQA Diamond93.1
Coding Index72.4
SciCode55.0
Humanity's Last Exam42.7
Intelligence Index39.1
5 evalsmean60.5

Scores from Artificial Analysis and public leaderboards, normalised to 100. Bar colour is the band, not the rank: green 80 and up, blue 55 and up, amber 30 and up. Benchmarks measure narrow skills, so test on your own workload before committing. Released 2026-07-08.

call it

model=
grok-4.5

requesty routes this id across every provider serving grok-4.5, picking on price and health and failing over automatically. the id stays valid when a provider changes underneath it

Base url is https://router.requesty.ai/v1 for every id here. One key reaches the whole catalog.

quickstart

openai compatible
main.py
from openai import OpenAI client = OpenAI(    api_key="YOUR_REQUESTY_API_KEY",    base_url="https://router.requesty.ai/v1",) response = client.chat.completions.create(    model="grok-4.5",    messages=[        {"role": "user", "content": "Explain quantum computing in one paragraph."},    ],) print(response.choices[0].message.content)

Change the base url, use your Requesty key, set the model to any id in the call pane. Existing OpenAI SDK code needs no other edit, and the same key reaches every other model in the catalog, so switching later is a one-parameter change. Browse all models

notes

reference

Grok 4.5 is xAI's frontier multimodal model for advanced coding, knowledge work, STEM reasoning, and agentic workflows. It supports text and image inputs with text output, tool calling, structured outputs, web search, and extended reasoning. Pricing is tiered: requests exceeding 200k total tokens are billed at a higher rate.

questions 6

Which providers serve grok-4.5?
grok-4.5 is available from 1 provider through Requesty: xAI Corp.. All endpoints share one OpenAI-compatible API and one key, and Requesty fails over between them automatically.
How much does grok-4.5 cost?
Pricing starts at $2.00 per million input tokens and $6.00 per million output tokens on the cheapest provider. Prices vary by provider and region; the table above shows every endpoint. Requesty charges exactly what the upstream provider charges, with no markup.
Is grok-4.5 open weights?
No. grok-4.5 is a proprietary model from xAI, served through xAI's own API and licensed cloud platforms.
What is the context window of grok-4.5?
grok-4.5 supports up to 500K tokens of context. Some providers expose a smaller window; check the per-endpoint context column above.
How do I use grok-4.5 with the OpenAI SDK?
Install the OpenAI SDK, set base_url to "https://router.requesty.ai/v1", set your API key to your Requesty key, and set the model to "grok-4.5" or any endpoint id from the table above. The quickstart section shows Python, JavaScript and cURL snippets.
Should I call grok-4.5 by its managed id or a provider id?
Use the managed id, "grok-4.5". Requesty picks which of the 1 provider serves each request based on price and health, and fails over when one degrades, so the id keeps working while the routing changes underneath it. Send a provider id like "xai/grok-4.5" only when you need one specific deployment and want no failover.

more from xai 6

Other xAI models
modelcontextfrom /Mproviders
grok-4.6500K$2.001
grok-build-0.1256K$1.001
grok-4.31M$1.251
grok-4.2-beta2M$2.001
grok-4-1-fast-reasoning2M$0.201
grok-4-1-fast-non-reasoning2M$0.201

route grok-4.5 through one endpoint

One key for 1 provider on this model and 600+ others. No markup on provider prices, automatic failover, caching built in. Weekly aggregates in the measured pane come from production traffic routed through Requesty, one line per provider on a shared axis. Methodology

grok-4.51 provider1 endpointsfrom $2.00 /1M inctx 500Kttft 1.51supdated Sep 12