Grok 4.20 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 4.20. It is sold in 27 forms, from $1.56 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 4.20
Blended at 3:1 input to output. The last column compares each against the standard tier.
| Source | ||||||||
|---|---|---|---|---|---|---|---|---|
| Standard | grok-4.20 | OpenRouter | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Standard Standard | grok-4.20 | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Standard | ↗ |
| Dated snapshot | grok-4.20-0309 | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Non-reasoning · Dated snapshot | grok-4.20-0309-non-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Reasoning · Dated snapshot | grok-4.20-0309-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Preview | grok-4.20-beta | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Dated snapshot · Preview | grok-4.20-beta-0309 | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Non-reasoning · Dated snapshot · Preview | grok-4.20-beta-0309-non-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Reasoning · Dated snapshot · Preview | grok-4.20-beta-0309-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Alias · Preview | grok-4.20-beta-latest | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Non-reasoning · Alias · Preview | grok-4.20-beta-latest-non-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Reasoning · Alias · Preview | grok-4.20-beta-latest-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Non-reasoning · Preview | grok-4.20-beta-non-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Reasoning · Preview | grok-4.20-beta-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Dated snapshot · Preview | grok-4.20-experimental-beta-0304 | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Non-reasoning · Dated snapshot · Preview | grok-4.20-experimental-beta-0304-non-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Reasoning · Dated snapshot · Preview | grok-4.20-experimental-beta-0304-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Alias · Preview | grok-4.20-experimental-beta-latest | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Non-reasoning · Alias · Preview | grok-4.20-experimental-beta-non-reasoning-latest | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Reasoning · Alias · Preview | grok-4.20-experimental-beta-reasoning-latest | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Multi-agent | grok-4.20-multi-agent | OpenRouter | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Non-reasoning | grok-4.20-non-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Non-reasoning | grok-4.20-non-reasoning-gv2 | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Non-reasoning · Alias | grok-4.20-non-reasoning-latest | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Reasoning | grok-4.20-reasoning | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Reasoning | grok-4.20-reasoning-gv2 | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
| Reasoning · Alias | grok-4.20-reasoning-latest | xAI | $1.25 | $2.50 | $0.200 | $1.56 | Same | ↗ |
Prices last checked: . Methodology
Which tier to use
What each costs against standard in our data, and the job it is for.
Reasoning and non-reasoning
grok-4.20 is sold with reasoning switched on or off, listed at the same price as standard per token. The per-token price hides the real difference: in reasoning mode the model writes out its thinking first, and those tokens are billed as output, so the same request usually costs several times more. Use non-reasoning for extraction, formatting and chat; turn reasoning on for multi-step problems.
Multi-agent variant
The vendor also lists a multi-agent variant of grok-4.20, listed at the same price as standard. It is the same model tuned or wired for one job, so pick one only when that is your job; otherwise standard is the reference price.
Dated snapshots
9 dated snapshots are listed at the same price as standard. A snapshot pins the model to one release, while the undated name moves to newer releases when the vendor updates it. Pin a snapshot in production when your prompts depend on exact output; use the undated name to pick up improvements automatically.
Preview and beta
15 pre-release builds (preview, beta or experimental) are listed at the same price as standard. They can change behaviour or be withdrawn at short notice, so they suit trials rather than production.
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-4.20 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 4.20 This model | xAI | $1.25 | $2.50 | 1,000,000 | $1.56 | ↗ |
| Grok 4.3 | 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 4.20 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.
What would Grok 4.20 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.
What is the context window for Grok 4.20?
1,000,000 tokens of input, with up to 1,000,000 tokens of output.
Grok 4.3 · GPT-5.4 mini · o3-mini · o4-mini · Claude Haiku 4.5 · All xAI models · Cost calculator