x-ai/grok-4.5Grok 4.5 is xAI’s proprietary AI model, released Jul 8, 2026. It costs $2/M input and $6/M output tokens, and handles a 500K-token context window. Its strongest use case is coding, where it ranks in the 86th percentile of the models Model Beat tracks.
Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.
Scores on standardized evaluations. Higher is better — and rank shows where Grok 4.5 lands among all models tracked on Model Beat.
Abstract visual reasoning
Harder abstract reasoning
Graduate-level scientific reasoning
Frontier of human expert knowledge
Common-sense trick questions
Factual accuracy & hallucination
Novel ML problem-solving
Scientific research coding
Human-rated web development
Olympiad-qualifier math
Multi-step agentic tasks
Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.
Grok 4.5 is an AI model developed by xAI, part of the Grok family, released Jul 8, 2026.
Grok 4.5's list price from xAI is $2 per million input tokens and $6 per million output tokens.
Grok 4.5 supports a context window of up to 500K tokens.
On standardized evaluations tracked by Epoch AI, Grok 4.5 scores 93.4% on GPQA Diamond, 54.1% on SciCode, 42.7% on Humanity's Last Exam.
Grok 4.5 is a proprietary model (API access), available through its provider's API rather than as a downloadable open-weight model.
Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Aug 20, 2026.