x-ai / text-generation API-only released 2026-07-08

Grok 4.5

Name: Grok 4.5
Price: 2 USD
Author: x-ai

Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.

Input / 1M

$2.00

Output / 1M

$6.00

Context

500K

AA Intelligence

38.8

Closed weights — available only as a hosted API text + image + file → text View on OpenRouter ↗

Pricing

via OpenRouter · USD per 1M tokens · synced 2026-10-24

$2.00

input / 1M

$6.00

output / 1M

$0.30

cached input / 1M

$8.00

1M in + 1M out

Price tiers

Above 200K prompt tokens: input $4.00/M, output $12.00/M (2× base)

Context window: 500,000 tokens
Max output: 450,000 tokens
Providers: 1
Cheapest provider: xAI · $2.00 / $6.00
Best throughput: —
AA Intelligence / Coding / Agentic: 38.8 / 72.4 / 41.2

✓ Tool calling ✓ Reasoning ✓ Structured outputs ✓ Image input ✓ File input ✗ Audio input ✓ Prompt caching

Price history

tracking started — chart appears after 7 days of snapshots (6 recorded)

Current: $2.00 input · $6.00 output per 1M tokens

Benchmarks

Third-party indices as published through OpenRouter — Artificial Analysis and Design Arena. Not measured by us.

AA Intelligence Index: 38.8
AA Coding Index: 72.4
AA Agentic Index: 41.2

Design Arena

CategoryEloWin %Rank

agenticgamedev 1236 56% #5

androidnative 1238 63.7% #7

blender3d 1210 57.8% #9

fullstack 1249 60.7% #10

godotgamedev 1229 58.2% #11

htmlslides 1101 52.5% #10

mobileapps 1221 53% #14

python-pptxslides 1186 54.3% #12

webapps 1218 53.4% #19

3d 1258 50.2% #30

asciiart 1259 54.8% #14

codecategories 1275 50.9% #28

dataviz 1267 49.7% #28

gamedev 1264 49.4% #34

svg 1213 48% #23

uicomponent 1276 51.5% #28

website 1280 52.4% #24

Providers

1 provider · per 1M tokens · last 30 min metrics

Provider	Quant	Context	Input	Output	Uptime	Tok/s
xAI	unknown	500K	$2.00	$6.00	100%	—
xAI	unknown	500K	$2.00	$6.00	100%	—
xAI	unknown	500K	$4.00	$12.00	—	—
xAI	unknown	500K	$4.00	$12.00	—	—

Provider data from OpenRouter's endpoint listing, refreshed daily.

Specifications

Organisation: x-ai
Released on OpenRouter: 2026-07-08
Context window: 500,000 tokens
Max output: 450,000 tokens
Input: text, image, file
Output: text
Tokenizer: Grok
Moderated by provider: No
OpenRouter id: x-ai/grok-4.5

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Prices, context and providers from the public OpenRouter API, snapshotted daily; benchmark indices from Artificial Analysis. See /methodology.