Grok 4.5

Grok 4.5 is SpaceXAI's frontier reasoning model for coding, knowledge work, and STEM. It supports text, image, and file inputs with tool calling and structured outputs. Reasoning is always active. Content policy rejections can still be charged: SpaceXAI may pass through a $0.05 moderation-failure fee, or a $0.055 usage-guidelines violation fee, depending on which rejection upstream returns.

  • Reasoning
  • Vision
  • Tool Calling
  • Structured Output

Added Jul 8, 2026

Pricing

Auto routing · per 1M tokens
Input
$2.00
Output
$6.00
Cache read
$0.30
Compare provider prices

Specifications

Context window
500K
Max output
500K
Avg output (7d)
1.4K tokens
Longer than 83% of models

Benchmarks

Sourced from Artificial Analysis.

Intelligence Index

38.8

Better than 91% of models compared

Coding Index

72.4

Better than 87% of models compared

Agentic Index

41.2

Better than 79% of models compared

Agentic work

AutomationBench-AA

Workflow automation with guardrail penalties

57.9%

Better than 81% of models compared

Harvey LAB-AA

Legal agentic work criterion pass rate

92.4%

Better than 77% of models compared

AA-Briefcase

Agentic knowledge work (Elo)

1280 Elo

Better than 70% of models compared

GDPval-AA v2

Economically valuable tasks (Elo)

1389 Elo

Better than 75% of models compared

Document reasoning

GDP.pdf

Professional PDF reasoning: all-pass rate

18.8%

Better than 68% of models compared

AA-LCR v1.1

Long context reasoning with updated grading

79.3%

Better than 83% of models compared

MLCR-AA

Medical long-context reasoning

15.0%

Better than 47% of models compared

Reasoning

HLE

Humanity's Last Exam

42.7%

Better than 91% of models compared

CritPt

Research-level physics reasoning

15.4%

Coding

Terminal-Bench v4.0

Practical coding and terminal tasks

10.6%

Better than 62% of models compared

SciCode

Python programming for scientific computing

55.0%

Better than 77% of models compared

Knowledge

AA-Omniscience Accuracy

Proportion of correctly answered questions

51.5%

AA-Omniscience Hallucination Rate

Rate of incorrect answers among non-correct responses

54.1%

Legacy benchmarks

GPQA Diamond (legacy)

Graduate-level scientific reasoning

93.1%

Better than 96% of models compared

AA-LCR (unversioned / legacy)

Long context reasoning evaluation

79.3%

Better than 83% of models compared

GDPval-AA (unversioned / legacy)

Economically valuable tasks

44.3%

Last updated Oct 14, 2026

Artificial Analysis

Providers

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