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SpaceXAI: Grok 4.5
X AItext9.1 / 10 Overall Rating
Grok 4.5 by xAI delivers high-tier performance in coding, STEM, and analytical tasks using a 500,000-token context window. At $2.00/1M input and $6.00/1M output tokens, it undercuts GPT-4o and Claude 3.5 Sonnet while offering unmatched 450,000 max output token limits.
Context Window
500K
Knowledge Cutoff
2025
Max Output
16K
License
Proprietary
Where it Excels (Pros)
- 500K context exceeds standard baselines
- 450K token max output capacity
- Lower API pricing than GPT-4o
Limitations (Cons)
- Unproven performance on non-STEM benchmarks
- Smaller ecosystem than major competitors
Benchmark Breakdown
Reasoning (MMLU)82%
Coding (HumanEval)78%
Mathematics (MATH)76%
Long-Context Retrieval95%
Pricing Matrix
Input cost / 1M tokens$2.00
Output cost / 1M tokens$6.00
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