xAI: Grok 4.3
Analysis Summary
xAI's Grok 4.3 is a multimodal model with a 1M token context window, vision, file input, tool use, and function calling. Its instruction-following, long-context, and tool-use results are strong relative to its general intelligence level, while coding performance supports technical assistance and software workflows. The feature set is broad enough for a single model to cover research, content, and automation tasks.
Design for Online could use it for long-form editorial work, content audits, document-heavy assistants, and agents that need dependable API actions. It is especially attractive when large context matters and outputs need to follow detailed formats. Pricing of $1.25 per million input tokens and $2.50 per million output tokens is competitive. More demanding reasoning tasks should still be routed to a stronger flagship.
Assessed August 9, 2026
Editorial notes
Grok 4.3 combines a 1M token context with strong instruction following, tool reliability, vision, and file support. It is a capable option for long-form content and agents, although its measured general intelligence trails newer flagship models.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
Grok 4.3 combines a 1M token context with strong instruction following, tool reliability, vision, and file support. It is a capable option for long-form content and agents, although its measured general intelligence trails newer flagship models.
Benchmark scores
Magenta = intelligence · Ink = technical/agentic · Cyan = content & long-context · Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
37.9 Intelligence Index·42.2 Coding Index·24.2 Agentic Index
How xAI: Grok 4.3 compares
XAI: Grok 4.3 ranks #82 of 433 AI models we track for overall intelligence, #91 of 206 for coding, #81 of 188 for agentic tasks. Its 1M-token context window is larger than 84% of the models we list. At $1.25 per million input tokens it is cheaper than 23% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on business fit. The pulled-in technical corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $1.25 | $0.001250 |
| Output | $2.50 | $0.002500 |
What would xAI: Grok 4.3 cost your business?
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A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 748 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save xAI: Grok 4.3 for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout xAI: Grok 4.3
Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual..
Frequently asked questions about xAI: Grok 4.3
How much does xAI: Grok 4.3 cost?
xAI: Grok 4.3 costs $1.25 per million input tokens and $2.50 per million output tokens.
What is the context window of xAI: Grok 4.3?
xAI: Grok 4.3 has a context window of 1,000,000 tokens (1M).
Is xAI: Grok 4.3 good for coding?
On our coding benchmark index, xAI: Grok 4.3 ranks #91 of 206 models, placing it in the broader range of the field for code generation and debugging.
What can xAI: Grok 4.3 do?
xAI: Grok 4.3 supports image/vision input, tool use, and function calling.
Who created xAI: Grok 4.3?
xAI: Grok 4.3 is developed by xAI and was released on April 30, 2026.