xAI: Grok 4.20
Analysis Summary
Grok 4.20 is an earlier-generation xAI model with a 2 million token context window, vision, tool use, and function calling. The intelligence index of 21.8 is in the limited range, and the agentic index of 38.3 is lower than the top agentic models in the landscape, including the later Grok 4.20 Multi-Agent Beta which scores 48.5 on intelligence.
For businesses, the very large context window is a genuine asset for long-document workflows, and the multimodal input (text, image, file) adds flexibility. However, reasoning depth and agentic reliability lag behind current-generation models, which limits its suitability for complex autonomous tasks or high-stakes outputs.
At $1.25 input and $2.50 output, pricing is moderate. Teams needing a large-context xAI model for lighter reasoning or document-processing tasks may find it useful, but the newer Grok 4.20 Multi-Agent Beta or Grok 4.5 are stronger choices where budget allows.
Assessed July 10, 2026
Editorial notes
Grok 4.20 from xAI has a 2M token context, vision, and tool use, but an intelligence index of 21.8 and agentic index of 38.3 place it well below the current xAI flagship tier.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
Grok 4.20 from xAI has a 2M token context, vision, and tool use, but an intelligence index of 21.8 and agentic index of 38.3 place it well below the current xAI flagship tier.
Benchmark scores
Magenta = intelligence Ā· Ink = technical/agentic Ā· Cyan = content & long-context Ā· Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
21.8 Intelligence IndexĀ·38.3 Agentic Index
How xAI: Grok 4.20 compares
XAI: Grok 4.20 ranks #135 of 394 AI models we track for overall intelligence, #105 of 301 for agentic tasks. Its 2M-token context window is larger than 100% of the models we list. At $1.25 per million input tokens it is cheaper than 22% of comparable models.
Dark bar = input Ā· light bar = output, scaled to the priciest peer.
1M tokens ā 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on value. The pulled-in content corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side āPricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $1.25 | $0.001250 |
| Output | $2.50 | $0.002500 |
What would xAI: Grok 4.20 cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 620 models ā Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save xAI: Grok 4.20 for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout xAI: Grok 4.20
Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering..
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Frequently asked questions about xAI: Grok 4.20
How much does xAI: Grok 4.20 cost?
xAI: Grok 4.20 costs $1.25 per million input tokens and $2.50 per million output tokens.
What is the context window of xAI: Grok 4.20?
xAI: Grok 4.20 has a context window of 2,000,000 tokens (2M).
What can xAI: Grok 4.20 do?
xAI: Grok 4.20 supports image/vision input, tool use, and function calling.
Who created xAI: Grok 4.20?
xAI: Grok 4.20 is developed by xAI and was released on March 31, 2026.
