x-aiListed Jul 8, 2026

SpaceXAI: Grok 4.5

Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.

Context window500K
Max output450K
Provider endpoints6
Benchmark results0
Agent runs1
Measured performance

Benchmark results

All leaderboards ↗
—

No published results in this index yet

Scores appear here when an evaluation matches this exact model.

Model + harness

Agent runs

All agent results ↗

Terminal-Bench 4.0

grok-build1.0.5

Reasoning effort none

Tested model identityGrok 4.5xai/grok-4.5
Pass rate12.42%

95% CI 9.8%–15.04%

n = 330
Checked
Access & cost

Prices across providers

10 quotes

Your token mix

USD · listed token rates

ExperientialStandard list rate
$3.50
xAI · via OpenRouterxai/zdr · prompt ≤ 200000 tokens
$3.50
xAI · via OpenRouterxai · prompt ≤ 200000 tokens
$3.50
xAI · via OpenRouterxai/zdr/priority · tier=priority · prompt ≤ 200000 tokens
$7.00
xAI · via OpenRouterxai/priority · tier=priority · prompt ≤ 200000 tokens
$7.00

OpenRouter

Catalog quote
Input
$2.00
Output
$6.00
Cached input
$0.30
USD / 1M tokens
500K context450K max outputPrice source ↗Checked Oct 18, 2026
Endpoint IDx-ai/grok-4.5

Experiential

Standard list rate

Input
$2.00
Output
$6.00
Cached input
$0.30
USD / 1M tokens

Catalog list rate. Plan allowances and temporary discounts are separate.

500K contextPrice source ↗Checked Oct 18, 2026
Endpoint IDgrok-4.5

xAI

via OpenRouter

xai/zdr · prompt ≤ 200000 tokens

Input
$2.00
Output
$6.00
Cached input
$0.30
USD / 1M tokens

Web search $0.005/search

500K context450K max outputPrice source ↗Checked Oct 17, 2026
Endpoint IDx-ai/grok-4.5::xai/zdr

xAI

via OpenRouter

xai/zdr · prompt over 200000 tokens · rate option 1

Conditional rate
Input
$4.00
Output
$12.00
Cached input
$0.60
USD / 1M tokens

Web search $0.005/search · A rate applies when all its listed conditions match. Dates and times use UTC.

500K context450K max outputPrice source ↗Checked Oct 17, 2026
Endpoint IDx-ai/grok-4.5::xai/zdr

xAI

via OpenRouter

xai · prompt ≤ 200000 tokens

Input
$2.00
Output
$6.00
Cached input
$0.30
USD / 1M tokens

Web search $0.005/search

500K context450K max outputPrice source ↗Checked Oct 17, 2026
Endpoint IDx-ai/grok-4.5::xai

xAI

via OpenRouter

xai · prompt over 200000 tokens · rate option 1

Conditional rate
Input
$4.00
Output
$12.00
Cached input
$0.60
USD / 1M tokens

Web search $0.005/search · A rate applies when all its listed conditions match. Dates and times use UTC.

500K context450K max outputPrice source ↗Checked Oct 17, 2026
Endpoint IDx-ai/grok-4.5::xai

xAI

via OpenRouter

xai/zdr/priority · tier=priority · prompt ≤ 200000 tokens

Input
$4.00
Output
$12.00
Cached input
$0.60
USD / 1M tokens

Web search $0.005/search

500K context450K max outputPrice source ↗Checked Oct 17, 2026
Endpoint IDx-ai/grok-4.5::xai/zdr/priority

xAI

via OpenRouter

xai/zdr/priority · tier=priority · prompt over 200000 tokens · rate option 1

Conditional rate
Input
$8.00
Output
$24.00
Cached input
$1.20
USD / 1M tokens

Web search $0.005/search · A rate applies when all its listed conditions match. Dates and times use UTC.

500K context450K max outputPrice source ↗Checked Oct 17, 2026
Endpoint IDx-ai/grok-4.5::xai/zdr/priority

xAI

via OpenRouter

xai/priority · tier=priority · prompt ≤ 200000 tokens

Input
$4.00
Output
$12.00
Cached input
$0.60
USD / 1M tokens

Web search $0.005/search

500K context450K max outputPrice source ↗Checked Oct 17, 2026
Endpoint IDx-ai/grok-4.5::xai/priority

xAI

via OpenRouter

xai/priority · tier=priority · prompt over 200000 tokens · rate option 1

Conditional rate
Input
$8.00
Output
$24.00
Cached input
$1.20
USD / 1M tokens

Web search $0.005/search · A rate applies when all its listed conditions match. Dates and times use UTC.

500K context450K max outputPrice source ↗Checked Oct 17, 2026
Endpoint IDx-ai/grok-4.5::xai/priority

Model specifications

Developer
x-ai
Modality
Language
Context
500,000 tokens
Maximum output
450,000 tokens
Weights
Not reported
Provider listed
Jul 8, 2026
First discovered
Oct 16, 2026

Exact identities

  • openrouterx-ai/grok-4.5
  • experientialgrok-4.5

Sources

Updated Oct 18, 2026

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