MDL-7126 EST.2026 · IDX.708 Language model In production ⇄ Compare
Grok 4.5 xAI · USA · 2026
xAI's July 2026 frontier model, trained on the Colossus supercluster with real-time X data.
Released July 8, 2026, Grok 4.5 is xAI's answer to the mid-year frontier wave, trained on the massive Colossus GPU cluster. It emphasizes reasoning, coding and real-time knowledge through deep integration with X, and ships across the Grok apps, API and Tesla vehicles.
#frontier #real-time data #Colossus #reasoning
Official website ↗ ▸ SpecificationsClass & identity
Model class Frontier LLM
Version / release 2026-07-08 Architecture
Architecture Transformer (trained on Colossus)
Parameters —
Context window 500,000 tokens
Modalities Text, vision → text
Knowledge cutoff / data — Performance (benchmarks)
MMLU —
GPQA Diamond —
SWE-bench —
MATH / AIME —
Chatbot Arena Elo —
Domain benchmark — Capabilities Text Vision Function calling Extended reasoning Real-time web Multilingual Agentic coding Long context (≥200k)
Reasoning mode Reasoning-focused
Tool use / agentic Function calling, agentic; X integration
Multilinguality Multilingual
Key strengths Real-time knowledge (X), reasoning, coding Access & deployment
Availability Proprietary (Grok apps, API, Tesla)
License Proprietary
Pricing $2 / 1M input tokens, $6 / 1M output (prompts under 200,000 tokens); $4 / $12 above that threshold, applied to the whole request; cached input $0.30 / $0.60
Deployment API / cloud / in-vehicle
Safety / alignment xAI policies Compiled to the wujec.ai Spec Standard v1 — “—” means not publicly disclosed.