Does Grok 4.20 (Non-Reasoning) charge more for long inputs?

Grok 4.20 (Non-Reasoning) Beta 0309 uses a single published rate for input, regardless of request length; see the pricing table for the applicable amount.

How much does prompt caching save on Grok 4.20 (Non-Reasoning)?

Prompt caching on Grok 4.20 (Non-Reasoning) bills cached input at $0.2000 per 1M tokens instead of $2.0000 per 1M tokens for standard input. The saving applies to the cached prefix only; the rest of the request is billed normally.

What should you evaluate before moving production traffic to Grok 4.20 (Non-Reasoning)?

Before switching production traffic to Grok 4.20 (Non-Reasoning), run a pilot on a representative slice of your traffic and check output quality, latency at peak concurrency, and cost per request. Verify the error and retry behaviour, and confirm the request limits you depend on match your plan.

What is the rate limit for Grok 4.20 (Non-Reasoning)?

The current model record does not publish a numeric rate limit for Grok 4.20 (Non-Reasoning). Confirm the quota for your plan in the console, then run a short load test at your expected concurrency to establish the effective ceiling before production.

Does Grok 4.20 (Non-Reasoning) have a free tier?

Grok 4.20 (Non-Reasoning) is billed per use and the record publishes no free-tier allowance. The current published rates are input $2.0000 per 1M tokens and output $6.0000 per 1M tokens. Trial credit or promotional quota is tied to your account rather than to the model, so check the console before planning around a free tier.

Model detail

Grok 4.20 (Non-Reasoning) Beta 0309

Provided by xAI

Pay-as-you-go

Grok 4.20 Beta is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses.

Model specs

Model ID: grok-4.20-beta-0309-non-reasoning

Context length: 1M
Max output: –
I/O modalities
Released: 2026-03

API endpoints

One MixRoute gateway, OpenAI-compatible

OpenAI-compatible /v1/chat/completions POST

Pricing

Flat rate, unit: /1M Tokens

Input

$2.0000 /1M Tokens

Completion

$6.0000 /1M Tokens

Cache read

$0.2000 /1M Tokens

Selection summary

Quickly judge whether it fits your workload

What is this model good for?

Grok 4.20 Beta is xAI's newest flagship model with industry-leading speed

Grok 4.20 Beta is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities.

What should you check before using it?

1,000,000 context tokens

xAI model that supports tool calling and structured output. Knowledge cutoff: 2025-09. Released 2026-03-10.

Why use it through MixRoute?

Swap the base URL, keep the Grok 4.20 (Non-Reasoning) client

MixRoute serves Grok 4.20 (Non-Reasoning) on the OpenAI-compatible endpoint /v1/chat/completions; point your existing client at https://api.mixroute.ai/v1 with the model ID grok-4.20-beta-0309-non-reasoning and re-run your integration tests.

Capabilities & compatibility

Unconfirmed capabilities stay "Unknown," no guesses

Tool calling

Grok 4.20 (Non-Reasoning) supports function and tool calls.

EX Send a tools definition; the response returns tool_calls to execute and feed results back.

Structured output

Grok 4.20 (Non-Reasoning) can produce JSON-formatted output on demand.

EX response_format: { type: "json_schema" } forces valid JSON output.

Streaming

Grok 4.20 (Non-Reasoning) supports streamed responses.

EX stream: true streams tokens incrementally, so chat UIs render as they arrive.

Prompt caching

Grok 4.20 (Non-Reasoning) supports prompt caching under supported routing conditions.

EX Keep the system prompt and tool definitions at the start of the request; repeated prefixes are automatically billed at the cache-read rate.

Vision input

Grok 4.20 (Non-Reasoning) can process image inputs alongside text.

EX Pass a base64-encoded image in a image_url content part alongside text messages.

OpenAI SDK

Call Grok 4.20 (Non-Reasoning) through MixRoute's OpenAI-compatible endpoint.

EX Change base_url to https://api.mixroute.ai/v1; everything else follows the OpenAI style.

Token cost estimator

Live estimate from this page's pricing, not an actual bill

Input tokens Max per request 1M

Output tokens

Requests / month

Cache hit rate 0%

Share of the same prefix read repeatedly, up to 100%

FAQ

A cache hit on Grok 4.20 (Non-Reasoning) requires an identical prompt prefix across requests. Put your stable instructions and reference material at the start of the prompt, keep them byte-identical, and let the changing part follow. Cached reads are then billed at the cache rate rather than the input rate.

Get started

01

Create an API key

Generate a key in the Console; one key calls every model.
02

Set the base URL

Fully OpenAI SDK-compatible; just swap the URL to connect.

https://api.mixroute.ai/v1
03

Specify the model ID

In the request's model field, enter:

grok-4.20-beta-0309-non-reasoning

Create an API key

New users get $5 in free credits

Test this model and alternate routes with the same request format

Start from a real workload, then let quality, total cost, and failure conditions decide whether to send production traffic.

Create an API key View integration docs