OpenAI: GPT-5.1-Codex-Max

The same model varies by 2.0× on input price — from $0.610 at Experiential Labs up to $1.25 at OpenRouter.

• Experiential Labs cheapest

  gpt-5.1-codex-max

  Input /1M

  $0.610

  Output /1M

  $2.94
  context —Sign up
• OpenCode

  gpt-5.1-codex-max

  Input /1M

  $1.25

  Output /1M

  $10.00
  context —Sign up
• AIHubMix

  gpt-5.1-codex-max

  Input /1M

  $1.25

  Output /1M

  $10.00
  context 400KSign up
• OpenRouter

  openai/gpt-5.1-codex-max

  Input /1M

  $1.25

  Output /1M

  $10.00
  context 400KSign up
• NanoGPT

  openai/gpt-5.1-codex-max

  Input /1M

  —

  Output /1M

  —
  context —Sign up

Gateway	Model ID	Context	Input /1M	Output /1M
Experiential Labs cheapest	gpt-5.1-codex-max	—	$0.610	$2.94	Sign up
OpenCode	gpt-5.1-codex-max	—	$1.25	$10.00	Sign up
AIHubMix	gpt-5.1-codex-max	400K	$1.25	$10.00	Sign up
OpenRouter	openai/gpt-5.1-codex-max	400K	$1.25	$10.00	Sign up
NanoGPT	openai/gpt-5.1-codex-max	—	—	—	Sign up

Data last updated 7 minutes ago.