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OpenAIProprietaryReasoningCodingMultimodal

GPT-5

OpenAI’s flagship general-purpose model for complex reasoning, coding, multimodal understanding, and agentic tool use.

Vision · Audio · Tool calling · Thinking · MCP · Coding

Last reviewed: 24 July 2026

Official pricing →

Overview

OpenAI’s flagship general-purpose model for complex reasoning, coding, multimodal understanding, and agentic tool use.

Capabilities

Vision: Yes
Audio: Yes
Tool calling: Yes
Thinking: Yes
MCP: Yes
Coding: Yes
Structured output: Yes

Technical specifications

Provider: OpenAI
License: Proprietary
Context window: 400K
Parameters: Undisclosed
Architecture: Transformer (proprietary)
Release: 2025
Modalities: Text, Image, Audio
Vision: Yes
Audio: Yes
Tool calling: Yes
Thinking: Yes
MCP: Yes
Open weights: No
API: Yes
Pricing (input): API tiered (see OpenAI pricing)
Pricing (output): API tiered (see OpenAI pricing)

Supported modalities

Text · Image · Audio

Context window

400K (400,000 tokens)

Pricing

Input: API tiered (see OpenAI pricing)

Output: API tiered (see OpenAI pricing)

Pricing varies by tier and modality; check official docs.

Availability

API: Yes

Chat UI: Yes

Open weights: No

Regions: OpenAI API regions

Available via ChatGPT and the OpenAI API.

Use cases

Complex multi-step reasoning and research
Software engineering and code agents
Multimodal analysis (docs, charts, images)
Tool-using assistants and MCP workflows

Strengths

Strong general capability across chat, code, and reasoning
Mature tool-calling and structured output ecosystem
Broad third-party integrations

Limitations

Closed weights; limited inspectability
Cost and rate limits at high volume
Vendor lock-in for proprietary features

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