Model comparison

GPT-5.3 Codex vs GPT-5.4 Mini

Compare GPT-5.3 Codex (OpenAI) and GPT-5.4 Mini (OpenAI) by price, context, capabilities, and latency.

Which should you pick?

Price: GPT-5.4 Mini is cheaper ($0.75 / 1M tokens input / $4.50 / 1M tokens output) vs GPT-5.3 Codex ($1.75 / 1M tokens input / $14 / 1M tokens output).

Side by side

GPT-5.3 Codex vs GPT-5.4 Mini — full comparison

Compare price, provider, context, capabilities, latency, and source basis.

Model	Provider	Input	Output	Context	Capabilities	Best for	Latency	Status	Source
GPT-5.3 Codexopenai/gpt-5.3-codex	OpenAI	$1.75 / 1M tokens	$14 / 1M tokens	400k	StreamingTool callingJSON modeVision	image understanding, multimodal chat	1814-3985ms	Catalog	Platform curated
GPT-5.4 Miniopenai/gpt-5.4-mini	OpenAI	$0.75 / 1M tokens	$4.50 / 1M tokens	400k	StreamingTool callingJSON modeVision	image understanding, multimodal chat	1497-3198ms	Catalog	Platform curated

FAQ

GPT-5.3 Codex vs GPT-5.4 Mini FAQ

Is GPT-5.3 Codex or GPT-5.4 Mini cheaper?

GPT-5.4 Mini is cheaper ($0.75 / 1M tokens input / $4.50 / 1M tokens output) vs GPT-5.3 Codex ($1.75 / 1M tokens input / $14 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.

Which has a larger context window, GPT-5.3 Codex or GPT-5.4 Mini?

Both offer the same context window: 400k tokens.

GPT-5.3 Codex vs GPT-5.4 Mini for Vision: which should I pick?

Both target Vision. Pick GPT-5.4 Mini to optimize cost, or GPT-5.3 Codex for the longer context window. Test both on real prompts before committing production traffic.

GPT-5.3 Codex details GPT-5.4 Mini details Pricing calculator OpenAI-compatible quickstart