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OpenAI

GPT-4.5

Complete specs, pricing, and benchmark data for GPT-4.5 by OpenAI. Last verified 2026-04-13.

VisionMultimodalJSON ModeFunctionsStreaming
Pricing

Input / 1M tokens

$75.00

Output / 1M tokens

$150.00

Context & Output

Context Window

128K

Max Output

8,192

TTFT

150ms

Speed

100 tok/s

Benchmarks

Arena ELO

1290

Coding ELO

1295

Reasoning ELO

1290

HumanEval

93

MMLU

89

MATH

152

GPQA

70

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Price History (Input $/M tokens)

Strengths
  • +Latest OpenAI model
  • +Strong multimodal
  • +Fast inference
Limitations
  • -Very expensive
  • -Premium pricing model

Best For

MultimodalVisionGeneral Purpose

Compare GPT-4.5 with...

vs Claude Opus 4vs Gemini 2.5 Provs o3vs DeepSeek R1vs o1vs Qwen 3 235B MoEvs Gemini Experimental 1206vs DeepSeek R1 (Groq)vs Llama 4 Maverickvs DeepSeek R1 (Together)vs Grok 3vs Claude Sonnet 4
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