ChatGPT (OpenAI) plans & limits
ChatGPT Free — Free
Key models: GPT-6 (Instant); GPT-6 Luna in Codex
- Price: $0 [source, checked 2026-10-19]
- Chat: Unlimited text chats with GPT-6 (subject to abuse guardrails) [source, checked 2026-10-19]
- Context window (Instant): 27K [source, checked 2026-10-19]
- Codex: Limited; GPT-6 Luna at Standard speed in desktop app, subject to rollout [source, checked 2026-10-19]
- Deep research / images / uploads: Limited (exact numbers not published) [source, checked 2026-10-19]
ChatGPT Go — $8/mo
Key models: GPT-6 Luna
ChatGPT Plus — $20/mo
Key models: GPT-6, GPT-6.1 Sol, GPT-6 Astra, GPT-6 Sol, GPT-5.6 Sol/Terra
- Price: $20/mo [source, checked 2026-10-19]
- Context window (Instant / Reasoning): 54K / 256K [source, checked 2026-10-19]
- Codex local messages per 5h (estimate): GPT-6 Astra 5-45; GPT-6.1 Sol 15-160; GPT-6 Sol 15-150; GPT-6 Luna 350-3,000. Weekly limits may also apply [source, checked 2026-10-19]
- Codex surfaces: Web, CLI, IDE extension, iOS; cloud code review [source, checked 2026-10-19]
- Chat message caps: not published [source, checked 2026-10-19]
ChatGPT Pro — $100/mo ($100, $200 or $500/mo tiers)
Key models: GPT-6 Astra (Pro reasoning), GPT-6.1 Sol (expanded)
- Price: $100, $200 or $500/mo (3 usage tiers) [source, checked 2026-10-19]
- Context window (Instant / Reasoning): 128K / 400K [source, checked 2026-10-19]
- Codex 5-hour limit: None currently ("Pro plans currently have no five-hour limit"); weekly allowance not published [source, checked 2026-10-19]
- Ultrafast mode: Pro $500 only; uses 8x included usage [source, checked 2026-10-19]
- Voice / images: Unlimited* (reasonable use) [source, checked 2026-10-19]