By ByteBot
OpenAI launched a $500/month Pro 500 plan at DevDay 2026 on September 29 — but the real news wasn’t the new tier. Starting October 30, the existing $200/month Pro plan’s Codex and ChatGPT Work allowance drops from 20x to 10x the Plus limit. The weekly GPT-6 Pro message cap falls from 200 to 100. Same price, half the product. The announcement was sandwiched between Dots, GPT-6.1 Sol, and 18 other features, making it easy to miss until the November billing cycle.
What Changed on the $200 Plan: Codex Usage Halved
The effective date is October 30, 2026. From that point, the $200 plan loses half its compute headroom: Codex and ChatGPT Work usage drops from 20x to 10x the Plus allowance, and the weekly GPT-6 Pro message cap falls from 200 to 100. OpenAI’s one concession is a firm commitment not to reintroduce the old five-hour session cap that plagued early Pro subscribers.
Existing subscribers retain their current limits through October 29, then receive a one-time $2,500 credit as compensation. The catch: those credits expire December 31, 2026. That’s roughly two months to spend $2,500 on API calls — enough to experiment heavily with GPT-6.1 Sol, the Decisions API, or Codex Cloud’s new persistent environments, but not a long-term offset. After the credits are gone, the reduction is permanent.
Related: Codex Cloud Gets Persistent Environments — Set Up Once, Run Forever
OpenAI Pro 500 Plan: What Ultrafast Actually Delivers
The new Pro 500 plan offers 25x the Plus allowance — 2.5x what the $200 plan provides after October 30 — plus exclusive access to Ultrafast. This new inference tier generates up to 300 tokens per second in Codex, eight times faster than standard, and delivers 6x the speed in the API. For real-time AI features or live coding assistance where latency is a direct product constraint, that speed differential is material.
Ultrafast is also available to Enterprise API customers. For GPT-6 Astra via the API, Ultrafast runs at $60 per million input tokens and $300 per million output tokens — six times standard rates. GPT-6.1 Sol Ultrafast is listed as coming soon. However, for batch jobs, background agents, and non-latency-critical tasks, standard rates remain far more economical.
Stay, Upgrade, or Go API-Only: Run the Numbers
Three paths exist for current $200 subscribers. First, stay at $200 and absorb the halved compute — workable for lighter Codex users who don’t approach the Plus multiplier ceiling. Second, upgrade to $500 for 25x usage and Ultrafast access — defensible if speed is a bottleneck and the workflow regularly hits current limits. Third, drop the subscription and pay per token via the OpenAI API directly.
That third path deserves more credit than it usually gets. GPT-6.1 Sol costs $2 per million input tokens and $10 per million output tokens — a fraction of Astra’s pricing. A developer generating one million tokens per month of coding work on Sol pays roughly $12 in API charges versus $200 or $500 flat. Consequently, the subscription tiers make economic sense primarily when usage is predictable and heavy enough that metered pricing would exceed the monthly cap. Run the numbers against your actual usage before defaulting to an upgrade.
Key Takeaways
- The $200 Pro plan loses half its Codex and ChatGPT Work compute starting October 30 — existing subscribers receive a $2,500 credit that expires December 31, 2026
- The new $500 Pro 500 plan offers 25x Plus usage and Ultrafast (300 tokens/second in Codex, 8x faster) — justified only for latency-sensitive production workloads
- Ultrafast is available via the API at $60/million input and $300/million output for GPT-6 Astra (6x standard); Enterprise access only for now
- Before upgrading, calculate actual token usage — GPT-6.1 Sol at $2/million input tokens undercuts both subscription plans for moderate usage volumes
