SpaceXAI: Grok 4.20 (x-ai/grok-4.20) costs $1.25 per 1M prompt tokens and $2.5 per 1M completion tokens, has a 2,000,000-token context window, and supports tool calling, structured outputs, reasoning and response format. Data updated 2026-10-30.
- Prompt price
- $1.25 / 1M tokens
- Completion price
- $2.5 / 1M tokens
- Context
- 2,000,000 tokens
- Input modalities
- text, image, file
- Output modalities
- text
- Tokenizer
- Grok
- Instruct type
- —
- Knowledge cutoff
- 2025-09-01
- Hugging Face
- —
Last price change: 2026-05-01
Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...