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GPT-4.5


GPT-4.5 is OpenAI logoOpenAI's language model, starting at $75.00 / 1M input and $150.00 / 1M output. OpenAI's GPT-4.5 model, a high-capability LLM positioned between GPT-4 and GPT-5 for advanced reasoning and instruction-following tasks.
Spec
Canonical IDopenai-gpt-4-5
TypeLanguage
StatusActive
CreatorOpenAIOpenAI
Providers
Input ModalitiesText
Output ModalitiesText
Intelligence Index
20.0
#202
Time to First Token
0.00s
#141
Output TPS
0.0
#417

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

ProviderStandard
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Azure AI Foundry logo
Azure AI Foundry
openai:gpt45
$75.00$150.00$37.50

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
GPT-5.1 Codex Max400K$1.25$10.00Available
GPT-5.1410K$1.25$10.00Available
GPT-5.1 Chat128K$1.25$10.00Available
GPT-5.1 Codex400K$1.25$10.00Available
GPT-5.1 Codex Mini400K$0.250$2.00Available
GPT-5.1 Instant128K$1.25$10.00Available
GPT-5 Mini Image400K$2.50$2.00Available
GPT-5 Image400K$10.00$10.00Available
GPT-5 Pro400K$15.00$120.00Available
GPT-5 Codex400K$1.25$10.00Available
GPT-4.5$75.00$150.00Current

Model IDs