OpenAI releases ChatGPT 5.5 Flagship AI Models (APK Download)
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OpenAI claims the release of GPT-5.5 marks a significant turning point in the evolution of artificial intelligence, introducing a model that goes far beyond traditional expectations of responsiveness and accuracy. Further adding that GPT-5.5 it is positioned as the most advanced and intuitive system yet. Here, see the ChatGPT 5.5 capabilities and download the latest ChatGPT app.
It features a new class of intelligence designed not merely to assist but to participate in complex, real-world workflows actively. Unlike earlier models that required detailed, step-by-step prompting, GPT-5.5 can interpret messy, multi-part instructions, plan its own approach, use tools, validate outputs, and persist through ambiguity until a task is fully completed. This shift transforms AI from a reactive assistant into a proactive collaborator capable of executing meaningful work across domains such as coding, research, data analysis, and business operations.
At its core, GPT-5.5 excels in what can be described as “agentic intelligence.” This means the model is capable of independently navigating the full lifecycle of a task—from understanding intent to delivering polished outcomes. It can move fluidly across tools, interact with software interfaces, and maintain context over extended workflows. This ability is particularly impactful in areas like software engineering, where GPT-5.5 demonstrates state-of-the-art performance. On benchmarks such as Terminal-Bench 2.0, it achieves an impressive 82.7% accuracy in complex command-line workflows, significantly outperforming its predecessor. Similarly, on SWE-Bench Pro, which evaluates real-world GitHub issue resolution, GPT-5.5 solves more problems end-to-end in a single pass, showcasing its ability to handle practical engineering challenges. Internal evaluations like Expert-SWE further highlight its strength in long-horizon coding tasks that would typically require hours—or even days—of human effort.
| GPT-5.5 | GPT-5.4 | GPT-5.5 Pro | GPT-5.4 Pro | Claude Opus 4.7 | Gemini 3.1 Pro | |
| Terminal-Bench 2.0 | 82.7% | 75.1% | – | – | 69.4% | 68.5% |
| Expert-SWE (Internal) | 73.1% | 68.5% | – | – | – | – |
| GDPval (wins or ties) | 84.9% | 83.0% | 82.3% | 82.0% | 80.3% | 67.3% |
| OSWorld-Verified | 78.7% | 75.0% | – | – | 78.0% | – |
| Toolathlon | 55.6% | 54.6% | – | – | – | 48.8% |
| BrowseComp | 84.4% | 82.7% | 90.1% | 89.3% | 79.3% | 85.9% |
| FrontierMath Tier 1–3 | 51.7% | 47.6% | 52.4% | 50.0% | 43.8% | 36.9% |
| FrontierMath Tier 4 | 35.4% | 27.1% | 39.6% | 38.0% | 22.9% | 16.7% |
| CyberGym | 81.8% | 79.0% | – | – | 73.1% | – |
What sets GPT-5.5 apart in coding is not just its ability to generate code, but its deep conceptual understanding of systems. It can identify why something is failing, determine where fixes should be applied, and anticipate the ripple effects of those changes across a codebase. Early testers have described the model as having “serious conceptual clarity,” noting that it can perform tasks such as merging complex code branches, debugging post-launch issues, and re-architecting systems with minimal human intervention. In some cases, developers reported that GPT-5.5 could replicate the work of experienced engineers, completing tasks in minutes that previously took days. This level of autonomy and reliability signals a major leap forward in how software development can be approached.
Beyond coding, GPT-5.5 is equally transformative in the realm of knowledge work. Its improved understanding of intent allows it to seamlessly handle tasks such as generating documents, building spreadsheets, analyzing datasets, and creating presentations. It can process large volumes of information, extract key insights, and produce structured outputs that are both accurate and actionable. Organizations are already leveraging these capabilities to streamline operations. For example, teams have used GPT-5.5 to analyze months of data, automate reporting workflows, and process tens of thousands of documents in significantly less time than traditional methods. In one case, financial teams accelerated the review of over 24,000 tax forms, saving weeks of effort. In another, employees automated weekly business reports, reclaiming hours of productivity each week.
The model’s ability to operate within software environments further enhances its utility. GPT-5.5 can “see” what is on a screen, interact with interfaces, and execute tasks across multiple tools with precision. This creates the impression of working alongside a digital partner that can handle routine and complex tasks alike. In ChatGPT, the introduction of GPT-5.5 Thinking enables faster and more concise solutions to challenging problems, while GPT-5.5 Pro offers even deeper reasoning and higher accuracy for demanding professional tasks. Early feedback indicates that these versions deliver more structured, relevant, and comprehensive outputs, particularly in fields such as business, law, education, and data science.
One of the most exciting aspects of GPT-5.5 is its impact on scientific research. The model demonstrates strong capabilities in multi-stage analytical workflows, where it must explore hypotheses, interpret data, and refine its approach over time. On benchmarks like GeneBench and BixBench, GPT-5.5 shows clear improvements over previous models, handling complex biological and data analysis tasks that often correspond to multi-day projects for human experts. In practice, researchers have used the model to analyze large gene-expression datasets, generating detailed reports and uncovering insights that would have taken months to produce manually. In another remarkable example, GPT-5.5 contributed to a new mathematical proof related to Ramsey numbers, a challenging area in combinatorics. This achievement highlights the model’s potential not just as a tool, but as a genuine collaborator in advancing scientific knowledge.
Efficiency is another defining characteristic of GPT-5.5. Despite its increased intelligence, the model maintains the same per-token latency as its predecessor while delivering significantly better performance. It achieves higher-quality results using fewer tokens, reducing both computational cost and iteration time. This efficiency is further enhanced by innovations in infrastructure, including optimized load balancing and GPU utilization strategies. By analyzing real-world traffic patterns, the system can dynamically partition workloads, improving token generation speeds by over 20%. These advancements ensure that GPT-5.5 is not only more capable but also more scalable and practical for widespread adoption.
Safety and responsible deployment remain central to the model’s design. GPT-5.5 incorporates the most robust safeguards to date, including advanced classifiers to detect and prevent misuse, particularly in sensitive areas like cybersecurity and biology. The model has undergone extensive evaluation through internal and external testing, including collaboration with red teamers and feedback from nearly 200 early-access partners. In the domain of cybersecurity, GPT-5.5 introduces enhanced capabilities for identifying vulnerabilities and supporting defensive measures, while implementing stricter controls to mitigate potential risks. The concept of “trusted access” allows verified users to leverage advanced features responsibly, ensuring that powerful tools are available for legitimate purposes such as protecting critical infrastructure.
From an accessibility standpoint, GPT-5.5 is being rolled out across multiple platforms, including ChatGPT and Codex, with availability for Plus, Pro, Business, and Enterprise users. The model supports large context windows—up to one million tokens in API environments—enabling it to handle extensive datasets and long-form tasks with ease. Pricing reflects its advanced capabilities, but improvements in token efficiency help balance overall costs, making it a compelling option for both individuals and organizations.
ChatGPT 5.5 Evaluations
Coding
| Eval | GPT-5.5 | GPT‑5.4 | GPT-5.5 Pro | GPT‑5.4 Pro | Claude Opus 4.7 | Gemini 3.1 Pro |
| SWE-Bench Pro (Public) * | 58.6% | 57.7% | – | – | 64.3% | 54.2% |
| Terminal-Bench 2.0 | 82.7% | 75.1% | – | – | 69.4% | 68.5% |
| Expert-SWE (Internal) | 73.1% | 68.5% | – | – | – | – |
*Labs have noted evidence of memorization(opens in a new window) on this eval
Professional
| Eval | GPT-5.5 | GPT‑5.4 | GPT-5.5 Pro | GPT‑5.4 Pro | Claude Opus 4.7 | Gemini 3.1 Pro |
| GDPval (wins or ties) | 84.9% | 83.0% | 82.3% | 82.0% | 80.3% | 67.3% |
| FinanceAgent v1.1 | 60.0% | 56.0% | – | 61.5% | 64.4% | 59.7% |
| Investment Banking Modeling Tasks (Internal) | 88.5% | 87.3% | 88.6% | 83.6% | – | – |
| OfficeQA Pro | 54.1% | 53.2% | – | – | 43.6% | 18.1% |
Computer use and vision
| Eval | GPT-5.5 | GPT‑5.4 | GPT-5.5 Pro | GPT‑5.4 Pro | Claude Opus 4.7 | Gemini 3.1 Pro |
| OSWorld-Verified | 78.7% | 75.0% | – | – | 78.0% | – |
| MMMU Pro (no tools) | 81.2% | 81.2% | – | – | – | 80.5% |
| MMMU Pro (with tools) | 83.2% | 82.1% | – | – | – | – |
Tool use
| Eval | GPT-5.5 | GPT‑5.4 | GPT-5.5 Pro | GPT‑5.4 Pro | Claude Opus 4.7 | Gemini 3.1 Pro |
| BrowseComp | 84.4% | 82.7% | 90.1% | 89.3% | 79.3% | 85.9% |
| MCP Atlas** | 75.3% | 70.6% | – | – | 79.1% | 78.2% |
| Toolathlon | 55.6% | 54.6% | – | – | – | 48.8% |
| Tau2-bench Telecom*** (original prompts) | 98.0% | 92.8% | – | – | – | – |
** MCP Atlas: results from Scale AI after the latest 2026 April update.
*** Tau2-bench telecom: results for 5.5 and 5.4 with original prompts i.e no prompt adjustment. This omits results from other labs that were evaluated with prompt adjustments.
Academic
| Eval | GPT-5.5 | GPT‑5.4 | GPT-5.5 Pro | GPT‑5.4 Pro | Claude Opus 4.7 | Gemini 3.1 Pro |
| GeneBench | 25.0% | 19.0% | 33.2% | 25.6% | – | – |
| FrontierMath Tier 1–3 | 51.7% | 47.6% | 52.4% | 50.0% | 43.8% | 36.9% |
| FrontierMath Tier 4 | 35.4% | 27.1% | 39.6% | 38.0% | 22.9% | 16.7% |
| BixBench | 80.5% | 74.0% | – | – | – | – |
| GPQA Diamond | 93.6% | 92.8% | – | 94.4% | 94.2% | 94.3% |
| Humanity’s Last Exam (no tools) | 41.4% | 39.8% | 43.1% | 42.7% | 46.9% | 44.4% |
| Humanity’s Last Exam (with tools) | 52.2% | 52.1% | 57.2% | 58.7% | 54.7% | 51.4% |
Cybersecurity
| Eval | GPT-5.5 | GPT‑5.4 | GPT-5.5 Pro | GPT‑5.4 Pro | Claude Opus 4.7 | Gemini 3.1 Pro |
| Capture-the-Flags challenge tasks (Internal)**** | 88.1% | 83.7% | – | – | – | – |
| CyberGym | 81.8% | 79.0% | – | – | 73.1% | – |
**** An expansion of the hardest CTFs used in system cards with additional hard challenges.
Long context
| Eval | GPT-5.5 | GPT‑5.4 | GPT-5.5 Pro | GPT‑5.4 Pro | Claude Opus 4.7 | Gemini 3.1 Pro |
| Graphwalks BFS 256k f1 | 73.7% | 62.5% | – | – | 76.9% | – |
| Graphwalks BFS 1mil f1 | 45.4% | 9.4% | – | – | 41.2% (Opus 4.6) | – |
| Graphwalks parents 256k f1 | 90.1% | 82.8% | – | – | 93.6% | – |
| Graphwalks parents 1mil f1 | 58.5% | 44.4% | – | – | 72.0% (Opus 4.6) | – |
| OpenAI MRCR v2 8-needle 4K-8K | 98.1% | 97.3% | – | – | – | – |
| OpenAI MRCR v2 8-needle 8K-16K | 93.0% | 91.4% | – | – | – | – |
| OpenAI MRCR v2 8-needle 16K-32K | 96.5% | 97.2% | – | – | – | – |
| OpenAI MRCR v2 8-needle 32K-64K | 90.0% | 90.5% | – | – | – | – |
| OpenAI MRCR v2 8-needle 64K-128K | 83.1% | 86.0% | – | – | – | – |
| OpenAI MRCR v2 8-needle 128K-256K | 87.5% | 79.3% | – | – | 59.2% | – |
| OpenAI MRCR v2 8-needle 256K-512K | 81.5% | 57.5% | – | – | – | – |
| OpenAI MRCR v2 8-needle 512K-1M | 74.0% | 36.6% | – | – | 32.2% | – |
Abstract reasoning
| Eval | GPT-5.5 | GPT‑5.4 | GPT-5.5 Pro | GPT‑5.4 Pro | Claude Opus 4.7 | Gemini 3.1 Pro |
| ARC-AGI-1 (Verified) | 95.0% | 93.7% | – | 94.5% | 93.5% | 98.0% |
| ARC-AGI-2 (Verified) | 85.0% | 73.3% | – | 83.3% | 75.8% | 77.1% |
Download ChatGPT 5.5
OpenAI released a new major update today, taking ChatGPT 1.2026.111 on the stable channel. GPT-5.5 is being deployed first to paid users (Pro, Plus, Go, Business), followed by free and logged-out users.
Users can access these features by joining the ChatGPT beta testing program through the Google Play Store or downloading the latest version from app stores.
You may sign up for ChatGPT beta testing on Play Store for latest features.
- Download from Google Play Store (Android)
- Download from Apple App Store (iOS)
ChatGPT 5.5 APK Download
- ChatGPT 1.2026.111 (arm64)
- Insatallation
