xAI: Grok 4.20
xAI: Grok 4.20 is an advanced AI model capable of processing text, images, and files with a context length of 2 million tokens, supporting tools and reasoning but lacking structured output. This versatile model handles multiple input modalities effectively and can reason through complex queries. For those seeking a robust solution that covers diverse data types without needing structured responses, Grok 4.20 is worth considering. Given its blended benchmark score of 61.5 across two independent evaluations, it performs well in practical applications. However, the pricing at $1.25 per million input tokens and $2.5 per million output tokens might be a factor for cost-sensitive projects, making it more suitable for those willing to pay for broader functionality and reasoning capabilities.
Benchmark results
Independent, published benchmarks. Blended score 61.5 across 2 benchmarks, last refreshed 2026-07-22. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 61.0 |
| 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
- default
- 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 xAI: Grok 4.20 places across the 4 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #8 | Transcript CleanupWriting · of 25 ranked | 143 |
| #17 | Code DocumentationCode · of 25 ranked | 141 |
| #24 | Long-Document SummarizationWriting · of 25 ranked | 154 |
| #25 | Long-Context Q&AAgents · of 25 ranked | 149 |
Similar models
Quick answers
- How much does xAI: Grok 4.20 cost?
- $1.25 per million input tokens and $2.50 per million output tokens.
- What is xAI: Grok 4.20's context window?
- 2,000,000 tokens, roughly 3,000 pages of text in a single request.
- Does xAI: Grok 4.20 support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can xAI: Grok 4.20 process images?
- Yes, it accepts image input.