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ModelsxAIGrok 4.20

Grok 4.20

x-ai/grok-4.202M context Compare →
MedianThe median blended price among comparable offers: one price per provider (its cheapest route), standard tier, current prices only. Priority tiers and prices converted from points are not counted.
$1.56
Most expensiveThe highest blended price among comparable offers: one price per provider (its cheapest route), standard tier, current prices only. Priority tiers and prices converted from points are not counted.
$1.77
Offers
11
Providers
5

Cheapest right now

NanoGPT

The provider's published policy: prompts are not used for training.

2M

$1.56 blended / 1M tokens

No change7D
in
$1.25
out
$2.50
Cached input
$0.20

Price drop observed: The blended price is 48% lower than before this drop; possibly temporary. · Price drop observed since Oct 18, 2026

Go to offer Go to offer at NanoGPT (opens in a new tab)via NanoGPT

Previous price $2.00 / $6.00

Grok 4.20: the lowest current price is $1.56 per million tokens (at a 3:1 input:output mix), a promotional price at NanoGPT, checked on ; the median of the 3 comparable offers is $1.56.

Listed offers, by price

Comparable offersOther offersSolid steps are comparable offers; dashed steps are the other offers, which are not counted in cheapest, median or most expensive.

Offers not counted in cheapest, median or most expensive (8)

  • $1.56 · xAI via Eden AI · cannot be designated the cheapest
  • $1.56 · xAI via Kilo Gateway · cannot be designated the cheapest
  • $1.56 · Glama via Glama · cannot be designated the cheapest
  • $1.56 · Nous Portal via Nous Portal · cannot be designated the cheapest
  • $3.13 · xAI via Kilo Gateway · cannot be designated the cheapest
  • $3.13 · xAI via Kilo Gateway · cannot be designated the cheapest
  • $3.13 · xAI via OpenRouter · priority tier
  • $3.13 · xAI via OpenRouter · priority tier

Price historyThe cheapest offer each day, against the lab's official list price when it publishes one. Each day at 00:00 UTC, the offer the API would have selected as the cheapest, with the same exclusions as /cheapest. Blended price, promotions included.

Cheapest offer and official list price, by day, 30 days
DayCheapest offerOfficial list price
2026-10-02$1.56, Glama–
2026-10-03$1.56, Glama–
2026-10-04$1.56, Glama–
2026-10-05$1.56, Glama–
2026-10-06$1.56, xAI–
2026-10-07$1.56, xAI–
2026-10-08$1.56, xAI–
2026-10-09$1.56, xAI–
2026-10-10$1.56, xAI–
2026-10-11$1.56, xAI–
2026-10-12$1.56, xAI–
2026-10-13$1.56, xAI–
2026-10-14$1.56, xAI–
2026-10-15$1.56, xAI–
2026-10-16$1.56, xAI–
2026-10-17$1.56, xAI–
2026-10-18$1.56, xAI–
2026-10-19$1.56, xAI–
2026-10-20$1.56, xAI–
2026-10-21$1.56, xAI–
2026-10-22$1.56, xAI–
2026-10-23$1.56, xAI–
2026-10-24$1.56, xAI–
2026-10-25$1.56, NanoGPT–
2026-10-26$1.56, NanoGPT–
2026-10-27$1.56, NanoGPT–
2026-10-28$1.56, NanoGPT–
2026-10-29$1.56, NanoGPT–
2026-10-30$1.56, NanoGPT–
2026-10-31$1.56, NanoGPT–

Cheapest offer

Offers

11 of 11 offers

Offers for Grok 4.20, one row per offer, sorted by blended price.
RankProvider · viaYou buy access through an aggregator: one account and one API that forward your requests to other providers. "Via" names the aggregator; the price is the one it charges you. When "via" says "hosted API", no aggregator is involved: the model belongs to a lab and another provider sells it.Input $/1MOutput $/1MBlended $/1MA single price that mixes input and output: 3 input tokens for 1 output token, per million tokens. It makes offers easy to rank; your real cost depends on your own mix. ContextThe maximum amount of text, counted in tokens, the model can take in and write in a single request. Past this limit, the request is refused or cut.ConditionsWhat a provider says about how it handles your data and who can sign up: training on prompts, processing region, sign-up requirements. Each comes from the provider's published documents; when nothing is published, it stays unknown.SignalsOffer
1 NanoGPT 1.25 2.50 1.56 2M Price drop observed: The blended price is 48% lower than before this drop; possibly temporary. · Price drop observed since Oct 18, 2026
Go to offer at NanoGPT (opens in a new tab)
2 xAIvia Eden AI 1.25 2.50 1.56 2M Unverified. No public page for this offer: listed, not designated cheapest
: Eden AI (opens in a new tab). No public price page for this model
3 xAIvia Kilo Gateway 1.25 2.50 1.56 2M Unverified. No public page for this offer: listed, not designated cheapest
: Kilo Gateway (opens in a new tab). No public price page for this model
4 Glama 1.25 2.50 1.56 2M Unverified. No public page for this offer: listed, not designated cheapest
: Glama (opens in a new tab). No public price page for this model
5 Nous Portal 1.25 2.50 1.56 2M Unverified. Neither seller nor price found on its page for 72 hours: listed, not designated cheapest
See pricing at Nous Portal (opens in a new tab)
6 xAIvia OpenRouter 1.25 2.50 1.56 2M Fee 5.5%: OpenRouter adds a 5.5% fee when you buy credits (read on openrouter.ai/pricing on Oct 30). Offers are ranked with this fee included.prompt up to 200K tokens: up to 200K: $1.25 / $2.50; above that: $2.50 / $5.00 (Input / Output, per million tokens)
Go to offer at OpenRouter (opens in a new tab)
7 Venicehosted APISold by a provider other than the lab that made the model. 1.42 2.83 1.77 2M
Go to offer at Venice (opens in a new tab)
8 xAIvia Kilo Gateway 2.50 5.00 3.13 2M Unverified. No public page for this offer: listed, not designated cheapestPriority tier: A different service tier, with its own speed and availability conditions.
: Kilo Gateway (opens in a new tab). No public price page for this model
9 xAIvia Kilo Gateway 2.50 5.00 3.13 2M Unverified. No public page for this offer: listed, not designated cheapestPriority tier: A different service tier, with its own speed and availability conditions.
: Kilo Gateway (opens in a new tab). No public price page for this model
10 xAIvia OpenRouter 2.50 5.00 3.13 2M Priority tier: A different service tier, with its own speed and availability conditions.Fee 5.5%: OpenRouter adds a 5.5% fee when you buy credits (read on openrouter.ai/pricing on Oct 30). Offers are ranked with this fee included.prompt up to 200K tokens: up to 200K: $2.50 / $5.00; above that: $5.00 / $10.00 (Input / Output, per million tokens)
Go to offer at OpenRouter (opens in a new tab)
11 xAIvia OpenRouter 2.50 5.00 3.13 2M Priority tier: A different service tier, with its own speed and availability conditions.Fee 5.5%: OpenRouter adds a 5.5% fee when you buy credits (read on openrouter.ai/pricing on Oct 30). Offers are ranked with this fee included.prompt up to 200K tokens: up to 200K: $2.50 / $5.00; above that: $5.00 / $10.00 (Input / Output, per million tokens)
Go to offer at OpenRouter (opens in a new tab)

No training on promptsPrompts may be used for trainingTraining terms not published

backend not named. The router bills this price itself without naming who serves the model.

  • NanoGPT

    $1.56

    NanoGPT

    in
    $1.25
    out
    $2.50
    Context
    2M

    No training on promptsPrice drop observed: The blended price is 48% lower than before this drop; possibly temporary. · Price drop observed since Oct 18, 2026

    Go to offer Go to offer at NanoGPT (opens in a new tab)via NanoGPT

  • xAI

    $1.56

    Eden AI

    in
    $1.25
    out
    $2.50
    Context
    2M

    Prompts may be used for trainingUnverified. No public page for this offer: listed, not designated cheapest

    Seller's site: Eden AI (opens in a new tab)No public price page for this model

  • xAI

    $1.56

    Kilo Gateway

    in
    $1.25
    out
    $2.50
    Context
    2M

    Training terms not publishedUnverified. No public page for this offer: listed, not designated cheapest

    Seller's site: Kilo Gateway (opens in a new tab)No public price page for this model

  • Glama

    $1.56

    Glama

    in
    $1.25
    out
    $2.50
    Context
    2M

    No training on promptsUnverified. No public page for this offer: listed, not designated cheapestbackend not named: The router bills this price itself without naming who serves the model.

    Seller's site: Glama (opens in a new tab)No public price page for this model

  • Nous Portal

    $1.56

    Nous Portal

    in
    $1.25
    out
    $2.50
    Context
    2M

    Prompts may be used for trainingUnverified. Neither seller nor price found on its page for 72 hours: listed, not designated cheapestbackend not named: The router bills this price itself without naming who serves the model.

    See pricing See pricing at Nous Portal (opens in a new tab)via Nous Portal

  • xAI

    $1.56

    OpenRouter

    in
    $1.25
    out
    $2.50
    Context
    2M

    No training on promptsFee 5.5%: OpenRouter adds a 5.5% fee when you buy credits (read on openrouter.ai/pricing on Oct 30). Offers are ranked with this fee included.prompt up to 200K tokens: up to 200K: $1.25 / $2.50; above that: $2.50 / $5.00 (Input / Output, per million tokens)

    Go to offer Go to offer at OpenRouter (opens in a new tab)via OpenRouter

  • Venice

    $1.77

    hosted APISold by a provider other than the lab that made the model.

    in
    $1.42
    out
    $2.83
    Context
    2M

    No training on prompts

    Go to offer Go to offer at Venice (opens in a new tab)at Venice

  • xAI

    $3.13

    Kilo Gateway

    in
    $2.50
    out
    $5.00
    Context
    2M

    Training terms not publishedUnverified. No public page for this offer: listed, not designated cheapestPriority tier: A different service tier, with its own speed and availability conditions.

    Seller's site: Kilo Gateway (opens in a new tab)No public price page for this model

  • xAI

    $3.13

    Kilo Gateway

    in
    $2.50
    out
    $5.00
    Context
    2M

    Training terms not publishedUnverified. No public page for this offer: listed, not designated cheapestPriority tier: A different service tier, with its own speed and availability conditions.

    Seller's site: Kilo Gateway (opens in a new tab)No public price page for this model

  • xAI

    $3.13

    OpenRouter

    in
    $2.50
    out
    $5.00
    Context
    2M

    No training on promptsPriority tier: A different service tier, with its own speed and availability conditions.Fee 5.5%: OpenRouter adds a 5.5% fee when you buy credits (read on openrouter.ai/pricing on Oct 30). Offers are ranked with this fee included.prompt up to 200K tokens: up to 200K: $2.50 / $5.00; above that: $5.00 / $10.00 (Input / Output, per million tokens)

    Go to offer Go to offer at OpenRouter (opens in a new tab)via OpenRouter

  • xAI

    $3.13

    OpenRouter

    in
    $2.50
    out
    $5.00
    Context
    2M

    No training on promptsPriority tier: A different service tier, with its own speed and availability conditions.Fee 5.5%: OpenRouter adds a 5.5% fee when you buy credits (read on openrouter.ai/pricing on Oct 30). Offers are ranked with this fee included.prompt up to 200K tokens: up to 200K: $2.50 / $5.00; above that: $5.00 / $10.00 (Input / Output, per million tokens)

    Go to offer Go to offer at OpenRouter (opens in a new tab)via OpenRouter

Blended = (3 × input + output) / 4, per million tokens. Prices in USD, converted at the ECB rate when the provider bills in another currency.

Method

Monthly cost for your workload

Computed by the API for the three cheapest offers, per 30-day month.
  1. NanoGPT$112.50per month
  2. xAI$112.50per month+$0.00 vs the cheapest
  3. Venice$127.65per month+$15.15 vs the cheapest

Compare Grok 4.20 with

Related models

More from xAI

All xAI models

Same index family

Use this data

The index is queryable. The API is free to use.
Free API
curl https://api.inferindex.dev/cheapest?model=x-ai/grok-4.20
MCP server
claude mcp add --transport http inferindex https://mcp.inferindex.dev/mcp

Also works in Cursor and Codex: see the MCP page.