SpaceXAI: Grok 4.20 Multi Agent Beta

Grok 4.20 Multi Agent Beta is a variant of SpaceXAI's Grok 4.20 designed for collaborative, agent-based workflows. This entry tracks a preview release and capabilities may change before general availability.

Providers

API providers, route pricing, availability, and recent reliability signals.


SpaceXAI	$1.25	$2.5	$0.2	--	--	--
Quantization: --\|Context Length: 2M\|Max Output: -- Pricing Input $1.25 Per 1M tokens Output $2.5 Per 1M tokens Cache Reads $0.2 Per 1M tokens Supported parameters Hover for details
Venice	$1.42	$2.83	$0.23	--	--	--
Quantization: --\|Context Length: --\|Max Output: -- Pricing Input $1.42 Per 1M tokens Output $2.83 Per 1M tokens Cache Reads $0.23 Per 1M tokens Supported parameters No parameter metadata is published for this route.

Pricing

Weighted provider pricing over the last 30 days, with recent route pricing history below.

Effective pricing

Weighted by routed usage over the last 30 days.

Weighted input price

Per 1M tokens across 0 input tokens

Weighted output price

Per 1M tokens across 0 output tokens


SpaceXAI	$1.25	$2.5	--	0
Venice	$1.42	$2.83	--	0

No 7-day effective pricing is available for the selected service tier.

Quickstart

Start calling this model with endpoint-specific examples.

Get an API key

Create an API key inSettingsKeysand store it asPHASEO_API_KEY

Keep it server-side, never commit it, and rotate it immediately if exposed.

Send the request

Choose a supported endpoint, pick a main language, then select the example style you want to copy.

Supported endpoints

Supported API reference routes for this model.

POST

/v1/responses

Responses API reference

POST

/v1/chat/completions

Chat Completions API reference

POST

/v1/messages

Messages API reference

Streaming

import Phaseo from '@phaseo/sdk';

const client = new Phaseo({
  apiKey: process.env.PHASEO_API_KEY,
});

const response = await client.generateResponse({
    "model": "spacex-ai/grok-4.20-multi-agent-beta-0309",
    "input": "Give me one fun fact about cURL."
});

const outputText = response.output
  ?.flatMap((item) => item.content ?? [])
  .find((item) => item.type === "output_text")
  ?.text;

console.log(outputText ?? response);

Accepted IDsClick to use and copy

Parameters

Aggregated across active providers for the responses route.

Routing will select a compatible provider when a parameter narrows availability, so this list stays model-facing instead of provider-facing.

View all parameters

Parameter	Description
`temperature`	Controls how random token selection can be.
`top_p`	Applies nucleus sampling by limiting candidates to a probability mass threshold.
`max_tokens`	Caps output length on endpoints and providers that use the max_tokens field name.
`seed`	Requests deterministic sampling when the upstream provider supports seeded generation.
`logprobs`	Requests token-level probability data in the response.
`tool_choice`	Controls which tool, if any, the model should call.
`tools`	Defines callable tools or functions the model can invoke.
`response_format`	Requests plain text, JSON, or schema-constrained output formats.
`structured_outputs`	Capability signal for reliable schema-constrained output workflows.
`top_logprobs`	Limits how many alternative token probabilities are returned per position.

Docs:TypeScript SDK Responses API

Grok 4.20 Multi Agent Beta Pricing, Benchmarks, Latency & Providers | Phaseo

SpaceXAI: Grok 4.20 Multi Agent Beta

Providers

Providers

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Pricing

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Activity

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SpaceXAI: Grok 4.20 Multi Agent Beta

Providers

Performance