How much does Grok 4.3 Beta cost?

We do not hold a list price for Grok 4.3 Beta yet, so we cannot compare its cost. Check the maker's own price page.

Is Grok 4.3 Beta open source?

We list Grok 4.3 Beta as closed: it is used through its maker's apps or API and its weights are not published (Epoch AI lists its access as "Hosted access (no API)").

How good is Grok 4.3 Beta compared with other AI models?

On the Epoch Capabilities Index, Grok 4.3 Beta scores 148.8 (likely range 147.2 to 150.3), which ranks 66 of 270 models we track. Scores close together are a tie in practice.

How does Grok 4.3 Beta compare with GPT-5.4 Mini?

Grok 4.3 Beta scores higher on 2 of 5 shared quality measures, GPT-5.4 Mini on 1. 2 measures are too close to call. See the full comparison for every measure.

How current are these numbers for Grok 4.3 Beta?

The newest data on this page is dated 26 Oct 2026. Scores come from Epoch AI and Arena, prices from the open LiteLLM price list.

AI Rankings

Grok 4.3 Beta: Score, Price and Context Window

Where Grok 4.3 Beta from xAI ranks, what it costs and how much text it can read, in plain numbers with the sources.

Data updated 26 Oct 2026

xAI
Closed weights
Released Apr 2026

Its score range overlaps with DeepSeek-V4-Pro, the model just above it, so a small gap in rank is not a meaningful difference.

Key facts

Overall score: 148.8; Rank 66 of 270. Likely range 147.2 to 150.3.
Weights: Closed; Used through the maker's apps or API (Epoch AI: Hosted access (no API)).

We do not have an Arena human-vote rating, a list price and a context window size for Grok 4.3 Beta yet. It is shown as "Not measured" rather than guessed.

Try itGrok in our AI tools directoryConversational AI assistant for writing, coding, visual creation, and live information from the web and X.

How Grok 4.3 Beta stacks up

Each strip shows every model we track as faint bars. The dot is this model. Better is always to the right, even for price.

Grok 4.3 Beta compared with all models we trackOverall capability: 148.8. Better than 75% of the other 269 models.

Overall capability148.8
Better than 75% of the other 269 modelsTop 25%
Epoch Capabilities Index: one score that combines many tests.

Compared with the other published models that have each measure. Data updated 26 Oct 2026.

Where Grok 4.3 Beta ranks

Leaderboards it appears on, best placing first.

See all leaderboards

Test results

Each test checks one kind of skill. Place shows where it stands among the models that took that test.

GPQA Diamond
Very hard multiple-choice science questions in biology, physics and chemistry, written by experts and designed so a quick web search does not give the answer.
88.8%
Place 48 of 183
OTIS Mock AIME
Maths competition problems in the style of the US AIME exam, from the 2024 and 2025 sets. Every answer is a whole number.
93.3%
Place 47 of 174
tied with 3 others
FrontierMath (Tiers 1-3)
Original, very hard maths problems written by mathematicians. Each has an exact answer and the problems are kept private so models cannot have memorised them. This is the Tiers 1 to 3 set, version 2.
42.8%
Place 58 of 87
SimpleQA Verified
Short factual questions that each have one correct answer. It measures how often a model gets facts right.
33.2%
Place 59 of 82

Similar models

Models from other makers with a similar overall score.

Learn more

Questions about Grok 4.3 Beta

How much does Grok 4.3 Beta cost?: We do not hold a list price for Grok 4.3 Beta yet, so we cannot compare its cost. Check the maker's own price page.
Is Grok 4.3 Beta open source?: We list Grok 4.3 Beta as closed: it is used through its maker's apps or API and its weights are not published (Epoch AI lists its access as "Hosted access (no API)").
How good is Grok 4.3 Beta compared with other AI models?: On the Epoch Capabilities Index, Grok 4.3 Beta scores 148.8 (likely range 147.2 to 150.3), which ranks 66 of 270 models we track. Scores close together are a tie in practice.
How does Grok 4.3 Beta compare with GPT-5.4 Mini?: Grok 4.3 Beta scores higher on 2 of 5 shared quality measures, GPT-5.4 Mini on 1. 2 measures are too close to call. See the full comparison for every measure.
How current are these numbers for Grok 4.3 Beta?: The newest data on this page is dated 26 Oct 2026. Scores come from Epoch AI and Arena, prices from the open LiteLLM price list.

Where this data comes from

Epoch AI: Benchmark data: Epoch AI, 'Capabilities & benchmarking', epoch.ai/benchmarks (CC BY 4.0). We match models across sources, rank them and show them in charts. Scores are not changed. Epoch AI does not endorse this site.

Newest data on this page: 26 Oct 2026. Prices are list prices and change often, so confirm on the maker's site before you buy. Sponsors never change a score or an order. How we calculate this · Report a mistake