OpenAI · Codex
ChatGPT Plus
Price
$20/mo
Rank
#3 of 18
Est. value score
Is ChatGPT Plus worth it?
ChatGPT Plus (OpenAI, for Codex) costs $20/mo. AgentMPG's estimated value score is 80/100, rank #3 of 18 plans tracked (tied with ChatGPT Pro 200, ChatGPT Pro 100). Among the 4 Codex plans we track, it ranks #1. No plan at a similar price ($10/mo to $40/mo) scores higher. Scores are editorial estimates, not measurements, and the right plan depends on your workload and models.
Official limits
Codex on web, CLI, IDE and iOS, with cloud code review. Per 5-hour window (estimated by OpenAI): 15–160 GPT-6.1 Sol, 35–285 GPT-6.1 Terra or 350–3,000 GPT-6 Luna local messages; GPT-6 Astra limited (5–45). Weekly limits may also apply; extra credits can be bought.
Source: learn.chatgpt.com/docs/pricing · verified 2026-11-02
Note: Heads up: starting in December 2026, OpenAI says Plus, Pro and Business usage will be one token-based allowance shared across ChatGPT and Codex (Instant chat excluded); pool sizes and start day not published yet.
What builders report
Best $20 entry for agentic coding right now per submissions: several focused sessions a week before the weekly wall.
Used this plan? Submit your burn rate to improve the score.
Head-to-head comparisons
Other Codex plans
Similar-price alternatives
Value score = AgentMPG editorial estimate of agentic work per dollar, 0–100 (not a measurement, not vendor-endorsed). Limits change often; check the vendor page before buying. Compare all plans.