How much does SpaceXAI: Grok 4.5 cost per 1M tokens?

SpaceXAI: Grok 4.5 costs $2.00 per 1M input tokens and $6.00 per 1M output tokens on the standard tier. Cached input is $0.300 per 1M.

What is SpaceXAI: Grok 4.5's context window?

SpaceXAI: Grok 4.5 accepts up to 500,000 tokens in a single request, and can return up to 450,000 output tokens.

Is there a cheaper OpenRouter model than SpaceXAI: Grok 4.5?

Yes. OpenAI: GPT-3.5 Turbo is $0.500 per 1M input tokens versus $2.00 for SpaceXAI: Grok 4.5, with a 16,385 token context window.

Where does this SpaceXAI: Grok 4.5 price come from?

From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

SpaceXAI: Grok 4.5 pricing

Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM. SpaceXAI: Grok 4.5 from OpenRouter costs $2.00 per 1M input tokens and $6.00 per 1M output tokens. Cached input is $0.300 per 1M. Context window 500,000 tokens.

API id x-ai/grok-4.5 · OpenRouter · source · updated 2026-09-25 · general-purpose

$2.00

Input / 1M tokens

$6.00

Output / 1M tokens

$0.300

Cached input / 1M

500K

Context window

SpaceXAI: Grok 4.5 specifications

Provider: OpenRouter
API id: x-ai/grok-4.5
Model type: general-purpose
Context window: 500K tokens
Max output: 450K tokens
Currency: USD
Price source: Provider API
Last checked: 2026-09-25

grok-4.5 across providers

The same model, priced by every seller we track. Ranked by the cost of 1M input + 1M output tokens, standard tier; savings measured against buying from the vendor directly.

Provider	Input /1M	Cached /1M	Output /1M	1M in + 1M out	vs vendor
xAIVendorCheapest	$2.00	$0.300	$6.00	$8.00	—
OpenRouterHostviewing	$2.00	$0.300	$6.00	$8.00	—

What SpaceXAI: Grok 4.5 costs in practice

Estimated cost at common usage volumes
Workload	Input tokens	Output tokens	Estimated cost
Short chat turn	1,000	500	$0.0050
Document summary	50,000	2,000	$0.11
1M tokens in, 200K out	1,000,000	200,000	$3.20

Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.

Common questions

How much does SpaceXAI: Grok 4.5 cost per 1M tokens?: SpaceXAI: Grok 4.5 costs $2.00 per 1M input tokens and $6.00 per 1M output tokens on the standard tier. Cached input is $0.300 per 1M.
What is SpaceXAI: Grok 4.5's context window?: SpaceXAI: Grok 4.5 accepts up to 500,000 tokens in a single request, and can return up to 450,000 output tokens.
Is there a cheaper OpenRouter model than SpaceXAI: Grok 4.5?: Yes. OpenAI: GPT-3.5 Turbo is $0.500 per 1M input tokens versus $2.00 for SpaceXAI: Grok 4.5, with a 16,385 token context window.
Where does this SpaceXAI: Grok 4.5 price come from?: From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

Head-to-head comparisons

Compare SpaceXAI: Grok 4.5 with another model →

Other OpenRouter models

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