[GPT-5](https://openrouter.ai/openai/gpt-5) Image combines OpenAI's GPT-5 model with state-of-the-art image generation capabilities. It offers major improvements in reasoning, code quality, and user experience while incorporating GPT Image …
Model details →OpenAI: GPT-5 Image vs OpenAI: GPT-5.3-Codex
OpenAI: GPT-5 Image and OpenAI: GPT-5.3-Codex are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-a…
Model details →Side-by-side comparison
| Capability | OpenAI: GPT-5 Image | OpenAI: GPT-5.3-Codex | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 400K | 400K | Tie |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $10.00 | $1.75 | 🏆 OpenAI: GPT-5.3-Codex |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $10.00 | $14.00 | 🏆 OpenAI: GPT-5 Image |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is OpenAI: GPT-5 Image better than OpenAI: GPT-5.3-Codex?
OpenAI: GPT-5 Image and OpenAI: GPT-5.3-Codex are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
What's the price difference between OpenAI: GPT-5 Image and OpenAI: GPT-5.3-Codex?
Input: $10.00 vs $1.75 per 1M tokens. Output: $10.00 vs $14.00 per 1M tokens.
What context windows do OpenAI: GPT-5 Image and OpenAI: GPT-5.3-Codex support?
OpenAI: GPT-5 Image supports up to 400K tokens. OpenAI: GPT-5.3-Codex supports up to 400K tokens.
Do both OpenAI: GPT-5 Image and OpenAI: GPT-5.3-Codex support tool calling?
OpenAI: GPT-5 Image: yes. OpenAI: GPT-5.3-Codex: yes.