What is the cheapest xAI model?

Grok Build 0.1 is the lowest blended-price option among tracked active non-embedding models, or among all models if only embeddings are listed: $1.00 input and $2.00 output per million tokens ($1.25 blended). Blended pricing uses 75% input and 25% output for generation models; your cheapest option may differ with your workload.

Which xAI model has the highest AA Intelligence score?

Grok 4.7 has the highest listed Artificial Analysis Intelligence Index score among tracked active xAI models: 46.4. This is one evaluation, not a guarantee of the best result for every task. Models without measured results are not ranked as zero.

How do I calculate monthly xAI API costs?

Multiply input tokens in millions by the input rate and add output tokens in millions multiplied by the output rate. For example, 20 million input and 5 million output tokens on Grok Build 0.1 cost an estimated $30 at the listed rates. This excludes tool charges, cache-specific charges, taxes and any endpoint-specific adjustments.

Which xAI model has the largest context window?

Grok 4.20 has a listed context window of 2M tokens, the largest among tracked active xAI models. Context capacity and maximum response length are separate limits; verify both on the model page and in the endpoint documentation.

What is the latest xAI model in the catalog?

Grok 4.7 has the most recent listed release date among tracked active xAI models: 2026-09-21. Models without a usable release date are excluded from this comparison. Catalog release dates do not guarantee immediate API availability.

Do xAI models support image inputs?

7 tracked active models list image inputs, including Grok 4.20, Grok 4.20 Multi-Agent, Grok 4.3. Accepting images does not mean a model generates images; check each model's separate input and output formats and endpoint limits.

Can prompt caching lower xAI API costs?

7 tracked active models have a listed cached-input rate, including Grok 4.20, Grok 4.20 Multi-Agent, Grok 4.3. Savings depend on eligible repeated input and the endpoint's cache rules, duration and any write charges.

Do xAI models support tool calling?

6 tracked active models list tool-calling capabilities, including Grok 4.20, Grok 4.3, Grok 4.5. Verify the exact tool schema and availability with your API endpoint before integrating.

How should I compare xAI benchmark scores and prices?

Compare scores within the same evaluation: Artificial Analysis Intelligence Index, DesignArena Elo, general Arena Elo and MMLU-Pro use different tasks and scales. Missing results are not zeroes. Pair a relevant measured benchmark with input/output pricing and tests of your own workload; the cheapest or highest-scoring model is not automatically the best fit.

Are retired xAI models included in the price list?

The price list shows active models by default. Turn on Show retired models to include retired catalog entries, where available. A retained model page preserves reference information, not a promise that its API is still available.

Is xAI an AI lab or an inference host?

xAI is categorized as an AI lab in this catalog. Individual model pages list available API hosts separately; model creator and API host are different roles.

AI lab

xAI API pricing & models

x.ai

AI lab behind the Grok family of models. We track 7 xAI models, priced from $1.00 per 1M input tokens with context windows up to 2M tokens.

Models tracked

Text & Reasoning · Vision

$1.25

Cheapest model

Grok Build 0.1

46.4

Top quality score

Grok 4.7

Largest context

6-mo price trend 23%

Price list

All xAI models and prices

Current xAI API prices per 1M tokens, context windows and benchmark scores. Click a column to sort, or a model for full pricing details.

Show retired models


Grok 4.7 xAI	$2	$6	500K	46.4	1269	—	—	150%
Grok 4.6 xAI	$2	$6	500K	44.3	—	—	—	0%
Grok 4.5 xAI	$2	$6	500K	38.8	—	—	—	0%
Grok 4.20 xAI	$1.25	$2.5	2M	25.7	—	—	—	0%
Grok 4.3 xAI	$1.25	$2.5	1M	24.9	1191	—	—	0%
Grok 4.20 Multi-Agent xAI	$1.25	$2.5	2M	—	—	—	—	0%
Grok Build 0.1 xAI	$1	$2	256K	—	—	—	—	0%

Grok 4.7 xAI

Input /1M: $2
Output /1M: $6
Context: 500K
AA Intelligence: 46.4
DesignArena Elo: 1269
Arena Elo: —
MMLU-Pro: —
30d trend: 150%

Grok 4.6 xAI

Input /1M: $2
Output /1M: $6
Context: 500K
AA Intelligence: 44.3
DesignArena Elo: —
Arena Elo: —
MMLU-Pro: —
30d trend: 0%

Grok 4.5 xAI

Input /1M: $2
Output /1M: $6
Context: 500K
AA Intelligence: 38.8
DesignArena Elo: —
Arena Elo: —
MMLU-Pro: —
30d trend: 0%

Grok 4.20 xAI

Input /1M: $1.25
Output /1M: $2.5
Context: 2M
AA Intelligence: 25.7
DesignArena Elo: —
Arena Elo: —
MMLU-Pro: —
30d trend: 0%

Grok 4.3 xAI

Input /1M: $1.25
Output /1M: $2.5
Context: 1M
AA Intelligence: 24.9
DesignArena Elo: 1191
Arena Elo: —
MMLU-Pro: —
30d trend: 0%

Grok 4.20 Multi-Agent xAI

Input /1M: $1.25
Output /1M: $2.5
Context: 2M
AA Intelligence: —
DesignArena Elo: —
Arena Elo: —
MMLU-Pro: —
30d trend: 0%

6 of 7

xAI input vs output prices

USD per 1M tokens for each model.

xAI price history

Blended price per 1M tokens over the last 6 months.

By use case

xAI models by category

Text & Reasoning

7 models · cheapest

Grok Build 0.1

$1.25 blended / 1M

Vision

7 models · cheapest

Grok Build 0.1

$1.25 blended / 1M

Comparisons

xAI vs other AI providers

Compare Grok 4.7 with models from other AI providers, including pricing and benchmark results.

xAI vs Google

Grok 4.7 vs Nano Banana Pro (Gemini 3 Pro Image)

$3.00 vs $4.50 · Arena Elo — vs 1211

xAI vs Anthropic

Grok 4.7 vs Claude Opus 5.5

$3.00 vs $8.00 · Arena Elo — vs —

xAI vs OpenAI

Grok 4.7 vs GPT-5.2 Pro

$3.00 vs $58 · Arena Elo — vs 1255

xAI vs Meta

Grok 4.7 vs Muse Spark 1.3

$3.00 vs $2.00 · Arena Elo — vs —

xAI vs DeepSeek

Grok 4.7 vs DeepSeek V4.1 Flash

$3.00 vs $0.34 · Arena Elo — vs —

xAI vs Mistral AI

Grok 4.7 vs Mistral Medium 3.5

$3.00 vs $3.00 · Arena Elo — vs —

FAQ

xAI pricing FAQ

Tracked active xAI models range from $1.00 to $2.00 per million input tokens. Output rates are listed separately for each model. Prices vary by model and API endpoint; these are token rates, not a subscription quote.