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GPT-5

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OpenAI's first unified reasoning model: 70.1% SWE-bench, 400K context, and $1.25/$10 per MTok

Updated Feb 27, 2026
AI ModelPay-per-useAPIWebDesktop
Last reviewed: Feb 27, 2026Details verified against vendor changelogs and hands-on usage where possible.

About

GPT-5 is OpenAI's unified reasoning model launched June 2025, designed for coding and agentic tasks. It achieves 70.1% on SWE-bench Verified with text and image inputs, a 400K context window, and up to 128K output tokens. GPT-5 supports reasoning tokens with configurable effort, runs across Chat Completions, Responses, Realtime, and Assistants APIs, and includes tools for web search, file search, image generation, and code interpreter. While GPT-5.2 is now the default ChatGPT model, GPT-5 remains available for production workloads at $1.25/$10 per MTok.

Key Features

  • ✓400K token context window with up to 128K output tokens
  • ✓70.1% SWE-bench Verified for autonomous coding tasks
  • ✓Text and image inputs with reasoning token support
  • ✓Configurable reasoning effort for speed/accuracy tradeoff
  • ✓Available via Chat Completions, Responses, Assistants, and Realtime APIs
  • ✓Tools: web search, file search, image generation, code interpreter, MCP
  • ✓Streaming, function calling, and structured outputs
  • ✓Batch/Flex pricing at 50% discount for lower-latency workloads

Pros & Cons

Pros

  • Free tier available
  • Supports multiple platforms (API, Web, Desktop)
  • Broad integrations (5+ connectors)

Cons

  • No BYOK; model choice dictated by vendor
  • Cloud-only; no local/offline option

Use Cases

  • →Autonomous coding tasks with 70.1% SWE-bench accuracy
  • →Multi-step reasoning with configurable effort levels
  • →Long-context document analysis with 400K token window
  • →Building AI agents with function calling and tool use
  • →Cost-effective production workloads via Batch/Flex pricing
  • →Multimodal applications combining text and image inputs

Technical Details

Languages

Any (via API)

AI Models

gpt-5gpt-5-2025-08-07

Integrations

OpenAI Chat Completions APIOpenAI Responses APIOpenAI Assistants APIOpenAI Realtime APIAzure OpenAI Service

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Frequently Asked Questions

What is GPT-5?

GPT-5 is OpenAI's unified reasoning model launched June 2025, designed for coding and agentic tasks. It achieves 70.1% on SWE-bench Verified with text and image inputs, a 400K context window, and up to 128K output tokens. GPT-5 supports reasoning tokens with configurable effort, runs across Chat Completions, Responses, Realtime, and Assistants APIs, and includes tools for web search, file search, image generation, and code interpreter. While GPT-5.2 is now the default ChatGPT model, GPT-5 remains available for production workloads at $1.25/$10 per MTok.

How much does GPT-5 cost?

GPT-5 offers pay-per-use pricing. Plans include: Standard: $1.25 / 1M input, $10 / 1M output, Batch or Flex: $0.625 / 1M input, $5 / 1M output, Priority: $2.50 / 1M input, $20 / 1M output.

What programming languages does GPT-5 support?

GPT-5 supports 1+ programming languages including Any (via API).

What AI models does GPT-5 use?

GPT-5 is powered by gpt-5, gpt-5-2025-08-07.

What platforms does GPT-5 support?

GPT-5 is available on API, Web, Desktop.

What can GPT-5 do?

GPT-5 provides code completion, code generation, debugging, AI chat, agentic/autonomous mode. Key features include: 400K token context window with up to 128K output tokens, 70.1% SWE-bench Verified for autonomous coding tasks, Text and image inputs with reasoning token support.

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Pricing and features change frequently—confirm on the vendor site.

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Pricing

Standard

$1.25 / 1M input, $10 / 1M output

  • Chat/Responses/Assistants/Realtime endpoints
  • 70.1% SWE-bench Verified
  • 400K context window, 128K max output

Batch or Flex

$0.625 / 1M input, $5 / 1M output

  • Lower-cost higher-latency processing tiers

Priority

$2.50 / 1M input, $20 / 1M output

  • Priority processing tier for faster execution

Company

Name
OpenAI
Founded
2015
Location
San Francisco, CA

Links

GitHub →Twitter →

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