Grok 4.5

Grok 4.5

SpaceXAI
Solar Pro 4

Solar Pro 4

Upstage
+
+

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About

Grok 4.5 is SpaceXAI’s advanced AI model built for coding, agentic tasks, engineering work, and knowledge-intensive productivity. The model is trained on coding, science, engineering, and math data, with reinforcement learning focused on multi-step software engineering and technical workflows. It is designed to handle real-world development tasks such as debugging, Rust and C/C++ work, terminal tasks, long-running agentic rollouts, and end-to-end app creation from a single prompt. Grok 4.5 is also built for fast serving, token efficiency, and lower-cost execution, with pricing based on input and output token usage. Beyond coding, the model supports business productivity tasks in Grok Build, including Excel modeling, PowerPoint diagram creation, Word writing, and research-assisted office workflows. Available through Grok Build, Cursor, and the SpaceXAI API console, Grok 4.5 gives developers and teams a high-performance model for building software, automating work, and more.

About

Solar Pro 4 is an agentic AI model built to carry real work to the finish: reading documents, running tools, producing deliverables, and stopping when the evidence runs out. It targets longer, more complex workloads that move across multiple documents, execute tasks in a terminal, and chain tool calls over many steps. The model supports a 512K context window with up to 128K output tokens, allowing agents to load contracts, reports, and data files into a single session without splitting them. It handles English, Korean, and Japanese for both input and output, while adjustable reasoning effort lets users choose deeper analysis or faster, real-time interaction. Solar Pro 4 is designed to stay accurate through long documents, multi-turn tool use, and terminal tasks, and to preserve values and conclusions across sequential deliverables such as Excel workbooks, reports, and slide decks.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers, engineering teams, AI builders, technical professionals, business users, and organizations that need a fast, capable AI model for coding, agentic workflows, software development, research, document creation, spreadsheets, and presentations

Audience

Developers and organizations seeking to run complex AI agent workflows across documents, tools, terminals, and multi-step business tasks with verifiable outputs

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$2 per million input tokens
$2 per million input tokens and $6 per million output tokens
Free Version
Free Trial

Pricing

$0.03 per 1M tokens
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • Grok 4.5 is really impressive from the perspective of a developer and AI agent builder. It feels built for the stuff I actually care about: coding, tool use, agentic workflows, debugging, refactoring, and getting real work done instead of just chatting. I especially like that it seems focused on speed and cost efficiency, because those two things matter a lot when you are running agents over and over in production-like workflows.

Cons

  • It still feels early, and I would want to test it hard before trusting it as the backbone of serious production agents. Benchmarks and launch claims are useful, but they do not always translate perfectly into messy real-world codebases, weird edge cases, long-running tasks, and tool-heavy workflows. I also want to see how reliable it is across longer sessions, especially when an agent has to stay on track through multiple steps without drifting.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

SpaceXAI
Founded: 2023
United States
grok.com

Company Information

Upstage
Founded: 2020
United States
www.upstage.ai/blog/en/solar-pro-4

Alternatives

Grok 4.6

Grok 4.6

SpaceXAI

Alternatives

Solar Pro 2

Solar Pro 2

Upstage AI
Claude Opus 5

Claude Opus 5

Anthropic
Solar Mini

Solar Mini

Upstage AI
Claude Fable 5

Claude Fable 5

Anthropic
Seed2.1 Turbo

Seed2.1 Turbo

ByteDance
Grok 4.3

Grok 4.3

SpaceXAI
Grok 4.7

Grok 4.7

SpaceXAI
Pokee-Isaac

Pokee-Isaac

Pokee AI

Categories

Categories

Integrations

Hermes Agent
Augment Code
Cheaper Inference
Convex
Go
HTML
Java
JavaScript
Julius AI
Kotlin
Lua
Microsoft Excel
OpenRouter
PHP
R
Ruby
Scala
SuperGrok
Upstage AI
XML

Integrations

Hermes Agent
Augment Code
Cheaper Inference
Convex
Go
HTML
Java
JavaScript
Julius AI
Kotlin
Lua
Microsoft Excel
OpenRouter
PHP
R
Ruby
Scala
SuperGrok
Upstage AI
XML
Claim Grok 4.5 and update features and information
Claim Grok 4.5 and update features and information
Claim Solar Pro 4 and update features and information
Claim Solar Pro 4 and update features and information