GPT-5.5 is live for ChatGPT Plus and Go users: what changed

Image: OpenAI’s GPT-5.5 launch announcement page on openai.com, used for editorial coverage.

The bottom line

GPT-5.5 became the default ChatGPT model on 23 April 2026 ¹ , and the rollout reached users at the same time. Anyone already paying for ChatGPT Plus at ₹1,999/month (approximately $24 USD at 2026-05-19 reference rate) ⁶ or ChatGPT Pro at ₹19,900/month (approximately $234 USD) ⁶ is on it now. No upgrade required. Users on the free ChatGPT Go promotion, which OpenAI launched at DevDay Bengaluru in November 2025 and which currently runs through 16 December 2026 ² , are also covered. Prices verified as of 5 May 2026; prices fluctuate, verify before purchase.

The headline upgrade is tool-chaining for multi-step tasks plus stronger code-and-data analysis, per OpenAI’s launch announcement ¹ . None of that is reason on its own to swap out Claude or Gemini in an existing routine. Test GPT-5.5 on a long workflow before committing.

Pricing in INR is unchanged. The Go promotion has not changed. UPI, RuPay, and domestic card paths continue to work as before ⁴ .

What happened

OpenAI announced GPT-5.5 on 23 April 2026 and made it the default model for ChatGPT Plus, Pro, Business, and Enterprise tiers immediately, per the company’s own launch announcement ¹ and TechCrunch’s launch coverage ³ . Free-tier users see GPT-5.5 access at reduced limits.

The model superseded GPT-5.4 (and GPT-5.3 Instant on the Instant variant), and rolled out alongside the same retirement schedule the company has been running for older models ⁵ . GPT-4o is on its way out. So is the original GPT-5 release variant. Plus and Pro subscribers can still pin specific older models inside the model picker for a transition window, but GPT-5.5 is the default the chat opens to.

India was included in the day-zero rollout. OpenAI’s launch announcement makes no India-only carve-out or staggered-rollout footnote — paid tiers worldwide moved to GPT-5.5 as the default at the same time ¹ , and TechCrunch’s launch-day coverage confirms the same simultaneous rollout to Plus, Pro, Business, and Enterprise ³ .

Image: TechCrunch’s launch-day coverage of GPT-5.5, used for editorial coverage.

What ChatGPT Plus subscribers get on GPT-5.5

The functional change is tool-chaining for multi-step tasks, per OpenAI’s launch announcement ¹ . GPT-5.5 can plan a sequence of tool calls, run them, and read the intermediate results without a human prompt at each step. The chained-tools behaviour applies inside ChatGPT itself; GPT-5.5 became available in the API on 24 April 2026, exposing the same capabilities developers can call programmatically per OpenAI’s announcement ¹ .

Code-and-data analysis is the second improvement called out at launch, per OpenAI’s announcement ¹ . TechCrunch’s launch-day coverage frames the release as a “superapp” model focused on tool orchestration and longer reasoning sessions inside ChatGPT ³ , without giving specific benchmark numbers against the prior GPT-5.4 baseline.

Context-window behaviour follows the existing tier structure on chatgpt.com/pricing ⁶ . Plus subscribers continue to access an Instant variant for fast everyday queries and a Thinking variant for longer reasoning sessions, per chatgpt.com/pricing ⁶ . Codex availability for GPT-5.5 inside ChatGPT Plus continues per the access pattern documented on the same pricing page ⁶ .

What ChatGPT Go users in India get for free

The free promotion that OpenAI launched at the November 2025 DevDay Bengaluru announcement remains in effect, per the OpenAI Help Center page on the India promotion ² . The promotional terms make ChatGPT Go available at no cost to users with an Indian payment-method-on-file through 16 December 2026 ² , with the nominal post-promotion price returning to ₹399/month (approximately $4.70 USD at 2026-05-19 reference rate) ⁷ .

Go users see GPT-5.5 at the Go tier’s daily limits, not at the Plus tier’s daily limits. Per OpenAI’s Help Center description of ChatGPT Go, the Go tier offers higher daily message caps than the free tier, image generation, voice mode, and access to the default model ⁷ — which is now GPT-5.5. The differences from Plus are quantitative (daily caps) rather than qualitative (model access).

The promotion’s billing path matters: Go billing accepts UPI, RuPay, Indian credit and debit cards, and Razorpay rails, per the Croma Unboxed coverage of the November 2025 India-pricing announcement ⁴ . The price is in INR; there is no separate forex or GST line item appended at checkout.

Image: ChatGPT pricing page, used for editorial coverage of the Plus and Pro tier feature surface across plans.

What did not change with GPT-5.5

Plus and Pro INR pricing is unchanged at ₹1,999/month (approximately $24 USD at 2026-05-19 reference rate) and ₹19,900/month (approximately $234 USD), per chatgpt.com/pricing ⁶ . The launch did not bring a price increase, and OpenAI did not introduce an India-specific GPT-5.5 surcharge.

Indian payment paths are unchanged. UPI, RuPay, Razorpay, and domestic-card support all continue, with no documented disruption tied to the model swap. GST treatment is the same: ChatGPT Plus is an INR-billed product and the all-in monthly bill carries no separate forex or GST line, per Croma Unboxed ⁴ .

API pricing tiers for GPT-5.5 are documented separately on OpenAI’s API pricing page rather than the chatgpt.com consumer pricing page; this article covers the consumer ChatGPT product, not the API. Indic-language quality, latency from Indian regions, and the mobile app’s behaviour on Indian carrier networks were not the focus of OpenAI’s launch announcement and have not been independently lab-tested at the time of writing.

Test before swapping out an existing assistant

For users with an existing AI workflow on Claude, Gemini, or a paid ChatGPT plan that is already meeting their needs, the right test is a long task the user runs every week, not a synthetic benchmark. A 50-page PDF the user already summarises with another tool. A multi-file refactor the user already runs through Claude. A spreadsheet pivot the user already runs through Gemini.

GPT-5.5’s tool-chaining behaviour shows up most clearly on tasks that previously required prompting the model to take the next step. Where the user’s current assistant handles those tasks acceptably, swapping is not automatic. Where it does not, GPT-5.5 is worth a one-week trial inside the existing ChatGPT plan before any wider routine change.

OpenAI’s announcement also flagged that older models will continue to retire on a published schedule ⁵ . Users with workflows pinned to GPT-4o or to the original GPT-5 release variant should treat GPT-5.5 as the model to migrate to, not as an optional upgrade.

What this article does not cover

This piece is the launch summary for Indian ChatGPT subscribers. It does not benchmark GPT-5.5 against Claude Sonnet or Gemini 2.5 Pro, which require a separate methodology and a longer test window. It does not cover OpenAI’s enterprise-tier negotiations or sales rumours, which are out of scope for a consumer-facing launch summary. And it does not predict what comes after GPT-5.5; OpenAI’s model-release cadence has been roughly six-monthly through 2025-26, but predicting the next step at this stage is speculation rather than reporting.

A side-by-side comparison with Claude and Gemini for Indian users on the same workflows is the natural next read once the dust settles on the launch and independent benchmark results land.