SpaceXAI Grok models in Big-AGI

Grok, the only model family wired natively into X: X search with a recency window, web search, and a code sandbox, on your own key.

The model wired into X.

Grok, from SpaceXAI (formerly xAI), is the one frontier model with native access to X. Big-AGI exposes that directly: search X with a recency interval from a day to a year, or run live web search and a code sandbox alongside it. Real-time, on your own SpaceXAI key, in a workspace built for it instead of a chat box.

Then put Grok's real-time read next to Claude and GPT in Beam and see exactly where they diverge.

All supported SpaceXAI models

ModelContextInputOutputReleased

Grok 4.7

NEW
VisionReasoningTools / functionsWeb search

xAI's frontier model for coding, agentic tasks, and knowledge work: a larger base model than Grok 4.6 with extended reinforcement learning, better at verifying…

500K

$2.00

$6.00

Sep 2026

Grok 4.6

VisionReasoningTools / functionsWeb search

xAI's August 2026 flagship for coding, agentic tasks, and knowledge work - superseded by Grok 4.7 as xAI's recommended model - extending Grok 4.5 with longer s…

500K

$2.00

$6.00

Aug 2026

Grok 4.5

VisionReasoningTools / functionsWeb search

xAI's July 2026 flagship with frontier performance on coding, knowledge work, and STEM - superseded by Grok 4.6 as xAI's recommended model. 500K token context…

500K

$2.00

$6.00

Jul 2026

Grok Build 0.1

HOT
VisionReasoningTools / functionsWeb search

xAI fast coding model with reasoning, function calling, and structured outputs. Text and image inputs, 256K context. Aliases: grok-code-fast-1, grok-code-fast,…

256K

$1.00

$2.00

May 2026

Grok 4.3

VisionReasoningTools / functionsWeb search

xAI's latest flagship model with reasoning and a 1M token context window. Supports text and image inputs, with reasoning_effort control (none/low/medium/high/x…

1M

$1.25

$2.50

Apr 2026

Grok 4.20

VisionTools / functionsWeb search

xAI flagship model with a 1M token context window. Non-reasoning variant for fast, high-quality responses with text and image inputs.

1M

$1.25

$2.50

Mar 2026

Grok 4.20 Reasoning

VisionReasoningTools / functionsWeb search

xAI flagship reasoning model with a 1M token context window. Deep reasoning and problem-solving with text and image inputs.

1M

$1.25

$2.50

Mar 2026

Grok 4.20 Multi-Agent

VisionReasoningWeb search

Multi-agent model that runs specialized agents in parallel for collaborative verification with reduced hallucination. Reasoning effort selects 4 vs 16 agents.

1M

$1.25

$2.50

Mar 2026

Grok 4.7

NEW
Sep 2026

xAI's frontier model for coding, agentic tasks, and knowledge work: a larger base model than Grok 4.6 with extended reinforcement learning, better at verifying…

VisionReasoningTools / functionsWeb search
500K · in $2.00 · out $6.00

Grok 4.6

Aug 2026

xAI's August 2026 flagship for coding, agentic tasks, and knowledge work - superseded by Grok 4.7 as xAI's recommended model - extending Grok 4.5 with longer s…

VisionReasoningTools / functionsWeb search
500K · in $2.00 · out $6.00

Grok 4.5

Jul 2026

xAI's July 2026 flagship with frontier performance on coding, knowledge work, and STEM - superseded by Grok 4.6 as xAI's recommended model. 500K token context…

VisionReasoningTools / functionsWeb search
500K · in $2.00 · out $6.00

Grok Build 0.1

HOT
May 2026

xAI fast coding model with reasoning, function calling, and structured outputs. Text and image inputs, 256K context. Aliases: grok-code-fast-1, grok-code-fast,…

VisionReasoningTools / functionsWeb search
256K · in $1.00 · out $2.00

Grok 4.3

Apr 2026

xAI's latest flagship model with reasoning and a 1M token context window. Supports text and image inputs, with reasoning_effort control (none/low/medium/high/x…

VisionReasoningTools / functionsWeb search
1M · in $1.25 · out $2.50

Grok 4.20

Mar 2026

xAI flagship model with a 1M token context window. Non-reasoning variant for fast, high-quality responses with text and image inputs.

VisionTools / functionsWeb search
1M · in $1.25 · out $2.50

Grok 4.20 Reasoning

Mar 2026

xAI flagship reasoning model with a 1M token context window. Deep reasoning and problem-solving with text and image inputs.

VisionReasoningTools / functionsWeb search
1M · in $1.25 · out $2.50

Grok 4.20 Multi-Agent

Mar 2026

Multi-agent model that runs specialized agents in parallel for collaborative verification with reduced hallucination. Reasoning effort selects 4 vs 16 agents.

VisionReasoningWeb search
1M · in $1.25 · out $2.50
8 models · sorted by release date · prices in USD per 1M tokens · refreshed hourlyCompare every model across vendors ->

Get started in 3 steps

1

Create an API key at the SpaceXAI console.

2

Paste it into Big-AGI's model settings.

3

Start chatting, or Beam it against other models and fuse the answers.

Running SpaceXAI in Big-AGI

Add your SpaceXAI API key and use the Grok models at SpaceXAI's own API rates. Big-AGI is not a reseller: no markup and no intermediary, SpaceXAI bills you directly.

  • Reasoning effort. Grok's reasoning models take an effort setting, from none up to high, so you trade latency for depth per request.
  • Fresh releases. New Grok models arrive tagged [new] with live pricing, no catalog wait.

Why not just Grok?

The Grok app is one model in one interface. Big-AGI runs Grok next to GPT, Claude, Gemini, and anything else you have connected, side by side in the same conversation. It also exposes what the app hides: reasoning effort and temperature are real parameters on SpaceXAI's reasoning models, set per request instead of the app's default.

SpaceXAI charges the API per token, so a light user can spend less in a month than a subscription costs, and a heavy user pays for tokens used instead of hitting a subscription tier's limits. Beam parallel runs do cost more, the honest tradeoff for comparing models side by side.

Your keys and your data

Turn on Direct Connection under SpaceXAI's Advanced settings and the browser calls SpaceXAI directly, bypassing the Big-AGI server, whenever your key is client-side and the API allows it. Your keys stay in your browser. Chats are stored locally first and sync only if you turn it on. The AI Inspector shows the exact request before it goes out: model, parameters, token counts, and a cost estimate.

SpaceXAI in Beam

Beam runs Grok against GPT, Claude, Gemini, or any other model you've connected, in parallel, then hands you Fusions: several strategies that combine, cross-check, and synthesize the parallel answers, which beats just picking the best one. Parallel runs use more tokens than a single chat.

SpaceXAI questions

FAQ

Is SpaceXAI the same as xAI, and where is the Grok API now?

Yes. xAI became SpaceXAI in July 2026 after merging into SpaceX; the Grok models, the API and the developer console at console.x.ai did not move. Big-AGI lists the vendor as SpaceXAI, and the models in its list are the Grok family.

Does a Grok subscription include API access?

No. API access is billed through the developer console at console.x.ai, separately from any consumer Grok subscription, and a team account needs a payment method on file before a key returns anything. Promotional credits, where granted, expire on a clock SpaceXAI sets.

How much does the Grok API cost through Big-AGI?

What SpaceXAI charges: per-token rates per model, shown in the list on this page and billed by SpaceXAI to your console account.

Why did my SpaceXAI API requests stop before the end of the month?

The console's monthly cap was reached; above it, requests stop for the rest of the month. Raise the cap in the console's billing page and turn on its usage alerts, which fire at 50, 75 and 90 percent of the cap.

Checked October 4, 2026

Bring your SpaceXAI key. Keep control.

Your key, your data, your choice of model. Big-AGI's Open branch is open source and self-hostable, so you can check exactly how SpaceXAI is called.

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