GPT-5
GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy in high-stakes use cases. It supports test-time routing features and advanced prompt understanding, including user-specified intent like "think hard about this." Improvements include reductions in hallucination, sycophancy, and better performance in coding, writing, and health
Context window
This model accepts 272K tokens in one request (~204K words of text).
What fits in one request
- FitsShort documentAbout 1,500 words of text
- FitsLong documentAbout 37K words of text
- FitsSmall codebaseAbout 150K words of text
- Won't fitFull novelAbout 375K words of text
Specifications
Context size, pricing, and release info in one place.
- Context window
- 272,000 tokens (272K)
- Max output tokens
- 128,000 tokens (128K)
- Speed tier
- balanced
- Provider
- Openai
- Release date
- Aug 2025
- Input cost
- $1.25/M / 1M tokens
- Output cost
- $10.00/M / 1M tokens
- Cached input
- $0.125/M / 1M tokens
Capabilities
See which features this model supports, such as vision, tools, and streaming.
- Vision
- Accepts image inputs alongside text
- Supported
- Tool use
- Can call external tools and APIs
- Supported
- Function calling
- Structured function call interface
- Supported
- Extended thinking
- Shows its chain-of-thought reasoning
- Supported
- Streaming
- Returns tokens as they are generated
- Supported
- Prompt caching
- Reuse repeated prompt prefixes cheaply
- Supported
- Web search
- Can browse the web during a request
- Not supported
- Batch API
- Process many requests asynchronously
- Not supported
Best for
Jump to a guide or ranking that matches each workload.
Compare GPT-5
Open a side-by-side comparison with one click.
- GPT-5 vs Amazon Titan Text Express
GPT-5 has 547% larger context window
- GPT-5 vs Amazon Titan Text Lite
GPT-5 has 547% larger context window
- GPT-5 vs Amazon Titan Text Premier
GPT-5 has 547% larger context window
- GPT-5 vs Claude Instant
GPT-5 has 172% larger context window
- GPT-5 vs Anthropic Claude
GPT-5 has 172% larger context window
- GPT-5 vs Codellama 34b Instruct
GPT-5 has 6540% larger context window
Frequently asked questions
Short answers about context size and how this model behaves.
More from Openai
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