MODELS
GPT-5
OpenAI's flagship reasoning model with 400K context and native multimodal I/O.
Specs
- Context window
- 400,000
- Max output
- 16,384
- Modalities
- text, image, audio
- Tool use
- ✓
- Vision
- ✓
- Streaming
- ✓
- License
- proprietary
- Released
- 2025-08-01
Pricing
- Input / 1M
- $10.00
- Output / 1M
- $40.00
- Cached input / 1M
- $1.00
Cost estimate
GPT-5 is OpenAI's top-tier general model, handling text, image and audio inputs with a 400K-token context window and 16K output cap. It's built for complex reasoning, agentic tool use and long-document work, and ships with the usual function calling, vision and streaming. The pricing ($10/$40 per M tokens) puts it in the same bracket as Claude Opus 4 and well above GPT-4o or Gemini 2.5 Pro.
Editor's verdict
Pick GPT-5 when you need OpenAI's strongest reasoning plus deep tool-use chains in one model — it's the natural upgrade from GPT-4o for agent stacks. The 16K output cap is tight compared to Claude's 64K, so it's not ideal for very long generations, and at $40/M output you'll feel the bill on high-volume workloads. For routine chat or RAG, GPT-5 mini or Gemini 2.5 Pro give you 80% of the quality at a fraction of the cost.
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Last updated: 2026-04-29