Anthropic vs 
OpenAI
Anthropic and OpenAI subscription plans, prices, and usage limits side by side, source-linked and tracked over time. 2026 snapshot, last verified 2026-07-01. Cheapest plan across the two: OpenAI Go at $8/mo. For value-per-dollar and measured receipts, see the interactive LimitWatch app.
| Provider | Plan | Price / mo | Limits | Confidence | Source |
|---|---|---|---|---|---|
| OpenAI | Go | $8 | 160 messages/3h 10 messages/5h | official | src |
| Anthropic | Pro | $20 | 5x Free 45 messages/5h | official | src |
| OpenAI | Plus | $20 | 160 messages/3h 3,000 messages/wk | official | src |
| Anthropic | Max 5x | $100 | 5x Pro 225 messages/5h | official | src |
| OpenAI | Pro ($100) | $100 | 5x Plus | official | src |
| Anthropic | Max 20x | $200 | 20x Pro 900 messages/5h | official | src |
| OpenAI | Pro | $200 | not published | official | src |
Recent Anthropic changes
2026-07-01Anthropic Max 20x Agent SDK $? credit / mo removed
2026-07-01Anthropic Max 5x Agent SDK $? credit / mo removed
2026-07-01Anthropic Pro Agent SDK $? credit / mo removed
Recent OpenAI changes
2026-07-01OpenAI Pro ($100) 5x usage src
2026-04-23OpenAI Go GPT-5.4 Thinking -> GPT-5.5 Thinking (10 messages / 5h) src
2026-04-23OpenAI Go GPT-5.3 -> GPT-5.5 (160 messages / 3h) src
2026-04-23OpenAI Pro GPT-5.3 -> GPT-5.5 src
2026-04-23OpenAI Plus GPT-5.4 Thinking -> GPT-5.5 Thinking (3,000 messages / wk) src
2026-04-23OpenAI Plus GPT-5.3 -> GPT-5.5 (160 messages / 3h) src