xAI: Grok 4.3
Analysis Summary
Grok 4.3 delivers a well-rounded profile: solid reasoning, strong coding ability, and one of the stronger agentic scores in its class, paired with excellent instruction-following and tool reliability metrics. A 1M token context window and vision support add real business flexibility.
This combination suits coding assistants, multi-step agentic workflows and long-document analysis where large context and reliable tool use matter. It trails the very top reasoning models on raw intelligence, so it is better matched to execution-heavy tasks than frontier research reasoning.
Pricing is aggressive relative to its capability, making it a strong value pick for teams building agents or coding pipelines without committing to the most expensive flagship tier.
Assessed July 29, 2026
Editorial notes
Grok 4.3 from xAI combines strong coding and agentic performance with a 1M token context window, vision, and aggressive pricing for its capability tier.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
Grok 4.3 from xAI combines strong coding and agentic performance with a 1M token context window, vision, and aggressive pricing for its capability tier.
Benchmark scores
Magenta = intelligence · Ink = technical/agentic · Cyan = content & long-context · Grey = community benchmarks. Data: Artificial Analysis, Hugging Face.
24.8 Intelligence Index·35.2 Coding Index·22.8 Agentic Index
How xAI: Grok 4.3 compares
XAI: Grok 4.3 ranks #120 of 398 AI models we track for overall intelligence, #79 of 173 for coding, #59 of 154 for agentic tasks. Its 1M-token context window is larger than 88% 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 content. The pulled-in intelligence 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?
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 654 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 #79 of 173 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.
