ChatGPT level of confidence

Here’s what you currently have access to based on tier: (from ChatGPT)

  1. Models / “modes” by plan

From the current pricing + GPT-5.1 docs: OpenAI+1

Free

  • GPT-5.1 (Auto/Instant)

    • You always have this, but with low message limits.

    • Auto can quietly switch into “thinking” mode for some harder questions.

  • GPT-5 thinking mini

    • The smaller, faster fallback used when you hit 5.1 limits.
  • No manual model picker

    • You basically just see “GPT-5.1” in the UI; legacy models (GPT-4o, GPT-4.1, etc.) are not available to free users anymore. OpenAI Help Center

Limits:

  • ~10 GPT-5.1 messages / 5 hours. After that, chats switch to the mini model until your limit resets. OpenAI Help Center

Plus (individual paid)

You pay monthly and get:

  • Model picker access for GPT-5.1 family:

    • GPT-5.1 Auto

    • GPT-5.1 Instant

    • GPT-5.1 Thinking (manually selectable, with its own weekly cap)

  • Expanded access to GPT-5 thinking mini (faster reasoning model). OpenAI Help Center+1

  • Legacy models (optional) when “Show additional models” is enabled:

    • GPT-4o, GPT-4.1, OpenAI o3, o4-mini (in a “legacy / additional models” section). OpenAI Help Center+1

Limits:

  • ~160 GPT-5.1 messages / 3 hours (currently boosted, may drop later).

  • GPT-5.1 Thinking: up to 3,000 messages/week when you pick that mode explicitly. Auto-switching into Thinking doesn’t count against this. OpenAI Help Center


Pro (higher-tier individual)

Everything in Plus, plus: OpenAI+2OpenAI Help Center+2

  • GPT-5.1 Pro

    • “Research-grade” version with deeper reasoning and larger context window.
  • Effectively unlimited GPT-5.1 messages (subject to abuse guardrails). OpenAI Help Center+1

  • More thinking-time presets (Light / Standard / Extended / Heavy).

  • Faster / more generous use of:

    • Image generation

    • Deep research / agent-style tools

    • Coding/Codex agent

    • Sora 1 video generation access (within credit limits). OpenAI+1

  • Extra legacy options: GPT-4.5, etc., when “Show additional models” is on. OpenAI Help Center


Business & Enterprise (team/org)

For completeness: OpenAI+2OpenAI Help Center+2

  • Unlimited GPT-5.1 for the workspace.

  • Flexible access to GPT-5.1 Thinking and GPT-5.1 Pro (charged via credits if on flexible pricing).

  • Admin-controlled access to legacy models (GPT-4o, GPT-4.1, etc.).

  • Huge context windows, connectors (Drive, Slack, SharePoint, GitHub, etc.), and enterprise security/compliance.