GPT-5.2 Pro
GPT-5.2 Pro is a large language model developed by OpenAI, first documented via API and web interface on February 17, 2026, and also tracked under the aliases GPT-5.4 Pro and GPT-5.5 Pro. It is categorized as multimodal, though its specific non-text capabilities have not been detailed in initial release materials. Its primary demonstrated strength is autonomous code repair: on the SWE-bench Pro benchmark it achieves a score of 55.6, and on SWE-bench Verified it reaches 80.0, placing it above the earlier GPT-5’s reported 71.7 on the Verified set. API pricing is fixed at $21.00 per million input tokens and $168.00 per million output tokens, establishing a distinct cost tier above standard synchronous models. GPT-5.2 Pro is immediately relevant because it delivers a quantifiable, benchmarked upgrade in agentic coding performance at a transparent price point, directly addressing enterprise demand for verifiable automation in production software pipelines as of early 2026.
GPT-5.2 Pro, OpenAI's flagship LLM released December 2025, already faces succession pressure. Recent headlines show GPT-5.5 Pro leapfrogging benchmarks and sustaining 2-hour bug-fixing sessions, while GPT-5.2 Pro's mention count (just 6 in 30 days) signals waning attention. The model deploys RLHF, Chain-of-Thought, and Instruction Tuning — proven but not novel techniques. Endorsed by LessWrong and researcher Will Brian, it targets scientific discovery use cases. Yet with GPT-5.5 rumored as a 'qualitative leap' and GPT-5.4 impacting downstream products like GPT-ImageGen-2, GPT-5.2 Pro sits in an awkward middle: too advanced to ignore, too dated to excite. The open question: can OpenAI maintain upgrade velocity without fragmenting its developer ecosystem?
- ·Released Dec 2025, GPT-5.2 Pro is already overshadowed by GPT-5.5 Pro's benchmark leaps and sustained coding sessions.
- ·Deploys standard techniques (RLHF, CoT, Instruction Tuning) — no architectural novelty signaled.
- ·Endorsed by LessWrong and Will Brian, but mention volume is low (6 in 30 days).
- ·Targets scientific discovery but faces internal competition from newer model iterations.
Signal Radar
Five-axis snapshot of this entity's footprint
Mentions × Lab Attention
Weekly mentions (solid) and average article relevance (dotted)
Timeline
8- Research MilestoneApr 29, 2026
GPT-5.5 Pro shows significant leap on Epoch benchmark; base GPT-5.5 surpasses GPT-5.4 Pro
View source - Product LaunchApr 23, 2026
Ethan Mollick shares early impressions of GPT-5.5 Pro, calling it the best model for hard problems.
- Research MilestoneApr 19, 2026
OpenAI insider describes GPT-5.5 Pro as 'qualitative leap' and 'absolutely insane'
View source- source:
- OpenAI employee social media post
- characterization:
- qualitative leap
- Product LaunchApr 19, 2026
Reported to generate complex, high-quality SVG code from a single prompt
View source- capability:
- SVG code generation
- user feedback:
- best SVG I've seen so far
- Research MilestoneMar 23, 2026
Reportedly solved an open problem in FrontierMath with human verification
View source- field:
- Automated Theorem Proving
- verification:
- Mathematician Will Brian
- Research MilestoneMar 8, 2026
Identified as likely the best model in the world for catastrophic risk-relevant tasks including bioweapons research and cyber operations
View source- capabilities:
- biological research R&D,cyberoffense operations,sophisticated computer use
- risk level:
- catastrophic
- Research MilestoneMar 4, 2026
Demonstrated ability to identify factual errors, logical inconsistencies, and mathematical mistakes in content
View source- capability:
- fact-checking
- Product LaunchJan 1, 2026
OpenAI releases GPT-5.5 Pro, focusing on reliability and consistency.
View source
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3Developed
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6Entities that show up in the same articles — shared coverage, not a stated relationship.
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