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SpaceXAI: Grok 4.5

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

View source on OpenRouter
Overview

Model specifications

Context
500,000 tokens
Maximum output
450,000 tokens
Architecture
text+image+file->text
Tokenizer
Grok
Knowledge cutoff
Not provided
Moderated
No
Capabilities

Input → Output

Input
textimagefile
Output
text
Reasoning

Yes · high · medium · low

API

Supported API parameters

include_reasoninglogprobsmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_logprobstop_p
Available providers

4 providers

xAI

unknown
Context
500K
Maximum output
450K
Input
$2.00
Output
$6.00
Cache read
$0.300
Cache write
Not provided

xAI

unknown
Context
500K
Maximum output
450K
Input
$4.00
Output
$12.00
Cache read
$0.600
Cache write
Not provided

xAI

unknown
Context
500K
Maximum output
450K
Input
$2.00
Output
$6.00
Cache read
$0.300
Cache write
Not provided

xAI

unknown
Context
500K
Maximum output
450K
Input
$4.00
Output
$12.00
Cache read
$0.600
Cache write
Not provided
x-ai

models

All models
XAx-ai

SpaceXAI: Grok 4.6

Grok 4.6 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.

Context
500K
Input
text · image · file
Output
text
Input: $2.00Output: $6.00per 1M tokens
View model details →
XAx-ai

xAI: Grok Imagine Image 2.0

Grok Imagine Image 2.0 is an image generation and editing model from xAI. It is suited for creating images from text prompts and editing images from references, with low and...

Context
66K
Input
text · image
Output
image
Input: FreeOutput: Freeper 1M tokens
View model details →
XAx-ai

SpaceXAI: Grok STT 1.0

Grok STT is SpaceXAI's speech-to-text model, available via the REST /v1/stt endpoint. It supports transcription with word-level timestamps, optional speaker diarization, and multichannel audio.

Context
Not provided
Input
audio
Output
transcription
Input: $100000.00Output: Freeper 1M tokens
View model details →
XAx-ai

SpaceXAI: Grok Imagine Video 1.5

Grok Imagine Video 1.5 is a video generation model from SpaceXAI. It creates videos from text prompts, with an optional starting image to guide the scene. It can direct subject...

Context
Not provided
Input
text · image
Output
video
Input: FreeOutput: Freeper 1M tokens
View model details →