Grok 4.5
by xAI
Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
Models
Grok 4.5
Added 10 July 2026
Overview
Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
Best for
Best for
Provider diversification and frontier A/B tests
Use cases
- chat products
- research agents
- coding experiments
How to use / API access
Call via OpenRouter with model id `x-ai/grok-4.5`.
- openrouter ·
x-ai/grok-4.5Docs
OpenRouter id: x-ai/grok-4.5
Benchmarks
- Intelligence Index (artificial-analysis) : 53.8 index
- Coding Index (artificial-analysis) : 72.4 index
- Agentic Index (artificial-analysis) : 45.7 index
- Design Arena agenticgamedev (other) : 1231 elo · #5
- Design Arena androidnative (other) : 1240 elo · #8
- Design Arena fullstack (other) : 1302 elo · #4
- Design Arena godotgamedev (other) : 1298 elo · #2
Enterprise DNA angle
Omni makes provider diversification operational: same jobs, different model ids, shared evals.
Notes
Grok 4.5 is listed in the EDNA Models directory from the OpenRouter catalogue.
Pros
- Competitive frontier quality from xAI
- Useful alternative when diversifying providers
Cons
- Newer ecosystem — validate latency and tool calling for your stack
- Closed model
In the AI Pulse
Recent daily briefs from the Enterprise DNA AI Pulse that mention this. The short daily read on what is actually happening in AI.
Get the free Developer’s Field Guide
A 27-page field guide to the AI coding workflow with Claude. Claude Code, MCP servers, the prompt patterns that work, and what to delegate. Free.
Enter your work email. We send it straight over, plus a few short notes worth knowing. Unsubscribe any time.