SpaceXAI: Grok 4.20
The x-ai vendor offers the SpaceXAI: Grok 4.20 AI model, which can process text, images, and file inputs with a maximum context length of 2 million tokens and completion token limit of 1.8 million. It also supports tools integration and reasoning capabilities. This model may be worth considering for those requiring a robust input processing system, given its ability to handle multiple modalities and substantial context lengths. Its price point is $1.25 per million input tokens and $2.5 per million output tokens, which is relatively high. The model's blended benchmark score of 52.4 across two independent benchmarks suggests it performs well in certain tasks but may not be the top choice for every application.
Benchmark results
Independent, published benchmarks. Blended score 50.6 across 2 benchmarks, last refreshed 2026-10-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 42.3 |
| EQ-Bench | emotional understanding in dialogue | 55.8 |
- Model ID
- x-ai/grok-4.20
- Vendor
- x-ai
- Released
- March 2026
- Tokenizer
- Grok
- Input Modalities
- text, image, file
- Output Modalities
- text
- Max Output
- 1,800,000 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $1.25/M input and $2.50/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.04 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.75 |
| A month of a busy support chatbot | 5M in / 2M out | $11.25 |
Category rankings
Where SpaceXAI: Grok 4.20 places across the 3 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #15 | Transcript CleanupWriting · of 25 ranked | 142 |
| #16 | Code DocumentationCode · of 25 ranked | 139 |
| #25 | Long-Document SummarizationWriting · of 25 ranked | 151 |
Similar models
SpaceXAI: Grok 4.7
SpaceXAI: Grok 4.6
SpaceXAI: Grok 4.5
SpaceXAI: Grok Build 0.1
SpaceXAI: Grok 4.3
SpaceXAI: Grok 4.3 (batch)
Quick answers
- How much does SpaceXAI: Grok 4.20 cost?
- $1.25 per million input tokens and $2.50 per million output tokens.
- What is SpaceXAI: Grok 4.20's context window?
- 2,000,000 tokens, roughly 3,000 pages of text in a single request.
- Does SpaceXAI: Grok 4.20 support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can SpaceXAI: Grok 4.20 process images?
- Yes, it accepts image input.