Grok 4.5
New🗒️ Overview
xAI's first model since acquiring Cursor — built specifically for coding and agentic work, roughly 4x more token-efficient than Claude Opus 4.8 on engineering tasks, at a fraction of the cost.
Grok 4.5 was designed from the ground up for coding, agentic tasks, and knowledge work, trained on real developer session data pulled from Cursor after xAI's acquisition of the editor. Elon Musk described it as 'Opus-class', positioning it against Anthropic's top coding models with an emphasis on speed and cost rather than raw benchmark supremacy. It ranks fourth on the Artificial Analysis Intelligence Index — ahead of every Gemini and open-weight model — while using roughly four times fewer output tokens than Claude Opus 4.8 to solve the same engineering tasks.
👍 Pros & Cons
Pros
- Over 60% cheaper output cost than Claude Opus 4.8
- ~4x more token-efficient on engineering tasks
- Native integration with Cursor on all plans
- Leads on at least one real-world sustained-coding benchmark
Cons
- Ranks behind Anthropic's and OpenAI's top models on most engineering benchmarks
- Not yet available in the EU (targeted mid-July 2026)
- Newer, smaller track record than established coding assistants
🎯 Best Use Cases
💰 Pricing Plans
Grok 4.5 is priced at $2 per 1M input tokens and $6 per 1M output tokens via the xAI API — more than 60% cheaper than Claude Opus 4.8 on output cost, while staying competitive with OpenAI's budget tier. It's available free inside Cursor on all plans and through xAI's own Grok Build tool; EU availability is targeted for mid-July 2026.
Cursor
- Grok 4.5 available on all Cursor plans
- Native Cursor integration
- Trained on real developer session data
xAI API
- Input / output token pricing
- ~4x more token-efficient than Opus 4.8
- ~80 tokens/sec generation speed
Grok Build
- Default model in Grok Build
- Multi-step agentic coding
- EU rollout targeted mid-July 2026
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