Grok 4.5: price, context window and capabilities
Grok 4.5 is a model from xAI (x-ai/grok-4.5). It supports reasoning. It supports tool use. It costs $2.00 per million input tokens and $6.00 per million output tokens, with a 500K-token context window.
What it costs in practice
Using the listed prices: a chat turn of 2,000 input and 500 output tokens costs about $0.0070, so 10,000 such turns cost about $70.00. Summarising a 100,000-token document into 2,000 tokens costs about $0.212. A long agent run that reads 1 million tokens and writes 50,000 costs about $2.30.
How it compares
Among the 40 models we track, Grok 4.5 ranks #29 by input price and #27 by output price (1 is cheapest), and #28 by context window (1 is largest). Models with the same tool and reasoning support that cost less per output token: DeepSeek V4 Pro 0423 ($0.418), Qwen3.8 Omni Flash ($0.470), Qwen3.8 Flash ($0.470), GPT-6 Luna Pro ($0.500). Models with a larger context window at the same or lower output price: Llama 4 Scout (1.3M), GPT-6 Luna Pro (1.1M), GPT-6 Luna (1.1M), Gemini 3.8 Flash (1.0M).
More from xAI
- Grok 4.7: $2.00 in / $6.00 out, 500K context
- Grok 4.6: $2.00 in / $6.00 out, 500K context
- Grok Build 0.1: $1.00 in / $2.00 out, 256K context
In the news
- Cursor goes local in India with a ₹649 plan — a third of Pro 28 Jul 2026
- Grok 4.5 tops pro-work benchmarks at a bargain $2/M 11 Jul 2026
- Grok 4.5 hits free X accounts — grab it before it's gated 10 Jul 2026
- Grok 4.5 lands at $2/$6 — and undercuts Opus 4.8 ~17x 8 Jul 2026
- Grok 4.5 ships: 500K context, $2/$6 per million tokens 8 Jul 2026
Prices and limits come from OpenRouter's public model catalogue, last synced 4 Oct 2026. Provider pricing can differ from OpenRouter's and changes often; confirm on the provider's own page before you commit. See the guide to choosing a model or the full comparison.
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