Model comparison

GPT-4.1 vs GPT-5.1 Codex Mini

Compare GPT-4.1 (OpenAI) and GPT-5.1 Codex Mini (OpenAI) by price, context, capabilities, and latency.

Which should you pick?

Price: GPT-5.1 Codex Mini is cheaper ($0.25 / 1M tokens input / $2 / 1M tokens output) vs GPT-4.1 ($2 / 1M tokens input / $8 / 1M tokens output).
Context: GPT-4.1 has the larger context window (1M tokens).

Side by side

GPT-4.1 vs GPT-5.1 Codex Mini — full comparison

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

Model	Provider	Input	Output	Context	Capabilities	Best for	Latency	Status	Source
GPT-4.1openai/gpt-4.1	OpenAI	$2 / 1M tokens	$8 / 1M tokens	1M	StreamingTool callingJSON modeVision	image understanding, multimodal chat	2033-2926ms	Catalog	Platform curated
GPT-5.1 Codex Miniopenai/gpt-5.1-codex-mini	OpenAI	$0.25 / 1M tokens	$2 / 1M tokens	400k	StreamingTool callingJSON modeVision	image understanding, multimodal chat	1491-2910ms	Catalog	Platform curated

FAQ

GPT-4.1 vs GPT-5.1 Codex Mini FAQ

Is GPT-4.1 or GPT-5.1 Codex Mini cheaper?

GPT-5.1 Codex Mini is cheaper ($0.25 / 1M tokens input / $2 / 1M tokens output) vs GPT-4.1 ($2 / 1M tokens input / $8 / 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-4.1 or GPT-5.1 Codex Mini?

GPT-4.1 is larger (1M tokens) vs 400k tokens.

GPT-4.1 vs GPT-5.1 Codex Mini for Vision: which should I pick?

Both target Vision. Pick GPT-5.1 Codex Mini to optimize cost, or GPT-4.1 for the longer context window. Test both on real prompts before committing production traffic.

GPT-4.1 details GPT-5.1 Codex Mini details Pricing calculator OpenAI-compatible quickstart