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SpaceXAI: Grok 4.5 API Pricing
Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.
How much does SpaceXAI: Grok 4.5 cost for a real workload?
At 10M input + 2M output tokens per month, SpaceXAI: Grok 4.5 costs about $32 ($20 input + $12 output). Try your own volumes in the cost calculator.
What are cheaper alternatives to SpaceXAI: Grok 4.5?
- OpenAI: GPT-5.2 (batch) — $0.875 in / $7 out per 1M
- Magnum v4 72B — $2.5 in / $5 out per 1M
- Z.ai: GLM 5.2 — $0.0341 in / $7 out per 1M
- OpenAI: GPT-5.6 Terra Pro (batch) — $1 in / $6 out per 1M
- OpenAI: GPT-5.6 Terra (batch) — $1 in / $6 out per 1M
- Google: Gemini 3.1 Pro Preview (batch) — $1 in / $6 out per 1M
Compare SpaceXAI: Grok 4.5 with other models
SpaceXAI: Grok 4.5 vs SpaceXAI: Grok Build 0.1SpaceXAI: Grok 4.5 vs SpaceXAI: Grok 4.3 (batch)SpaceXAI: Grok 4.5 vs SpaceXAI: Grok 4.3SpaceXAI: Grok 4.5 vs SpaceXAI: Grok 4.20 Multi-AgentSpaceXAI: Grok 4.5 vs SpaceXAI: Grok 4.20SpaceXAI: Grok 4.5 vs SpaceXAI: Grok 4.7
Frequently asked questions
How much does SpaceXAI: Grok 4.5 cost?
SpaceXAI: Grok 4.5 costs $2 per 1M input tokens and $6 per 1M output tokens (list price, snapshot October 21, 2026). At 10M input + 2M output tokens per month that is about $32.
What is the context window of SpaceXAI: Grok 4.5?
SpaceXAI: Grok 4.5 has a context window of 500,000 tokens and can return up to 450,000 output tokens per response.
What are cheaper alternatives to SpaceXAI: Grok 4.5?
Cheaper models include OpenAI: GPT-5.2 (batch) ($0.875 in / $7 out), Magnum v4 72B ($2.5 in / $5 out), Z.ai: GLM 5.2 ($0.0341 in / $7 out). See the full list on this page.
Is SpaceXAI: Grok 4.5 free to use?
No. SpaceXAI: Grok 4.5 is a paid model at $2 input / $6 output per 1M tokens. 20 free models are listed on the free models page.
Provider: x-ai · Model ID: x-ai/grok-4.5 · Modality: text+image+file->text · Price snapshot October 21, 2026, refreshed daily. How we collect prices