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    Grok 4.5

    by xAItext+image+file->text4 endpoints
    Neura Intelligence Index
    63.2/ 100
    Rank
    #97—
    Confidence
    medium
    Benchmarks
    4(10% coverage)

    Overview

    Grok 4.5 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.

    Capabilities

    Text generation
    Image understanding
    Tool use / Function calling
    Structured output
    Extended reasoning
    Prompt caching
    Long context

    Modalities

    Input
    TextImageFile
    Output
    Text

    Technical Specifications

    Context Window
    500K tokens
    Tokenizer
    Grok
    Uptime (24h)
    9904.1%
    Country
    🇺🇸US
    Release Date
    July 9, 20251y

    Supported Parameters

    frequency_penaltyinclude_reasoninglogprobsmax_tokenspresence_penaltyreasoningreasoning_effortresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_logprobstop_p

    Benchmark Performance

    math

    BenchmarkScoreSource
    AIME 2025
    91.7
    		verified

    reasoning

    BenchmarkScoreSource
    GPQA Diamond
    87.5
    		verified
    Humanity's Last Exam
    40
    		verified
    ARC-AGI v2

    Performance Over Time

    Pricing

    Per 1M tokens
    Input$2.00
    Output$6.00
    Cache read$0.30
    xAI Website

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    File input
    Top-P sampling
    Stop sequences
    Deterministic seed
    Log probabilities
    15.9
    verified
    Added
    July 8, 2026
    Last synced 7/21/2026

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    $1.00/M in256K ctx