Grok 4.3 API pricing
Standard tier, blended at 3:1 input to output: $1.56 per million tokens.
xAI charges $1.25 per million input tokens and $2.50 per million output tokens for Grok 4.3. It is sold in 4 forms, from $1.25 to $1.56 blended; the table below shows what each costs against standard. 3 of the models nearest it in price are cheaper on a blended basis.
Every tier of Grok 4.3
Blended at 3:1 input to output. The last column compares each against the standard tier.
| Source | ||||||||
|---|---|---|---|---|---|---|---|---|
| Standard | grok-4.3 | OpenRouter | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Standard Standard | grok-4.3 | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Standard | ↗ |
| Alias | grok-4.3-latest | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Batch | grok-4.3:batch | OpenRouter | $1.00 | $2.00 | $0.160 | $1.25 | −20% | ↗ |
Prices last checked: . Methodology
Which tier to use
What each costs against standard in our data, and the job it is for.
Batch
The batch tier (grok-4.3:batch) is 20% cheaper than standard. Batch requests are queued and answered asynchronously, typically within 24 hours, so it suits work nobody is waiting on: evaluations, back-fills, bulk classification and tagging. Anything a user is waiting on belongs on the standard tier.
Aliases
"-latest" names point at whichever release the vendor currently serves, listed at the same price as standard. The price can change under you when the alias moves, so budget against a pinned name.
Direct or through a reseller
Through OpenRouter, grok-4.3 is the same price as buying direct. A reseller is worth it for one bill across vendors and automatic fallback; buy direct for the vendor's own batch, caching and rate-limit terms.
Against the models nearest in price
Standard tiers, blended at a 3:1 input to output ratio.
| Source | ||||||
|---|---|---|---|---|---|---|
| Grok 4.3 This model | xAI | $1.25 | $2.50 | 1,000,000 | $1.56 | ↗ |
| Grok 4.20 | xAI | $1.25 | $2.50 | 1,000,000 | $1.56 | ↗ |
| GPT-5.4 mini | OpenAI | $0.750 | $4.50 | 272,000 | $1.69 | ↗ |
| o3-mini | OpenAI | $1.10 | $4.40 | 200,000 | $1.93 | ↗ |
| o4-mini | OpenAI | $1.10 | $4.40 | 200,000 | $1.93 | ↗ |
| Claude Haiku 4.5 | Anthropic | $1.00 | $5.00 | 200,000 | $2.00 | ↗ |
| Mistral Large 4 | Mistral AI | $0.680 | $2.09 | 1,048,576 | $1.03 | ↗ |
| Mistral Large 4.0 | Mistral AI | $0.680 | $2.09 | 1,048,576 | $1.03 | ↗ |
| Llama 3.1 Nemotron 70B Instruct Hf | Together AI | $0.880 | $0.880 | 32,768 | $0.880 | ↗ |
Prices last checked: . Methodology
Questions
How much does Grok 4.3 cost per million tokens?
$1.25 per million input tokens and $2.50 per million output tokens, with cached input at $0.200. At a 3:1 input to output mix that blends to $1.56. Checked 28 Oct 2026.
How much cheaper is Grok 4.3 through the Batch API?
grok-4.3:batch costs $1.00 in and $2.00 out per million tokens, 20% cheaper than standard, in exchange for asynchronous delivery.
What would Grok 4.3 cost for a real workload?
A thousand requests a day at 2,000 input and 600 output tokens each comes to $120.00 a month on the standard tier, or $96.00 through batch.
What is the context window for Grok 4.3?
1,000,000 tokens of input, with up to 1,000,000 tokens of output.
Grok 4.20 · GPT-5.4 mini · o3-mini · o4-mini · Claude Haiku 4.5 · All xAI models · Cost calculator