OpenAI Releases GPT-5.5: Quicker, Smarter—And Pricier – Decrypt

OpenAI launched GPT-5.5 on Thursday, pitching it basically as a mannequin focused at agentic pc use. It writes and debugs code, browses the online, fills out spreadsheets, and retains working by way of multi-step duties while not having a human to babysit each transfer.

The discharge is already rolling out right now to Plus, Professional, Enterprise, and Enterprise subscribers throughout ChatGPT and Codex, OpenAI stated.

“We’re releasing GPT‑5.5, our smartest and most intuitive-to-use mannequin but, and the subsequent step towards a brand new manner of getting work accomplished on a pc,” OpenAI stated in an announcement. “The features are particularly robust in agentic coding, pc use, information work, and early scientific analysis—areas the place progress is determined by reasoning throughout context and taking motion over time.

The large headline from OpenAI: GPT-5.5 is measurably smarter than its predecessor, GPT-5.4—and it is not slower. Matching GPT-5.4’s per-token latency in real-world serving whereas hitting greater scores throughout benchmarks is the type of effectivity enchancment that often would not occur. Greater fashions are typically slower when operating underneath the identical {hardware}.

On Terminal-Bench 2.0, which assessments how effectively a mannequin handles advanced command-line workflows that require planning and iterative device use, GPT-5.5 scores 82.7%. Claude Opus 4.7 lands at 69.4%, whereas Gemini 3.1 Professional sits at 68.5%. That is not a marginal lead.

On GDPval, a benchmark testing information work throughout 44 actual occupations—from finance to authorized analysis to product administration—GPT-5.5 matches or beats business professionals in 84.9% of comparisons.

It’s additionally a reasonably good coder, as anticipated. On Skilled-SWE, an inside benchmark for long-horizon coding duties with a median estimated human completion time of 20 hours, GPT-5.5 outperforms GPT-5.4. On SWE-Bench Professional, which grades real-world GitHub situation decision, it reaches 58.6%. Claude Opus 4.7 scores greater at 64.3%, however OpenAI claims it might be as a result of “Anthropic reported⁠ indicators of memorization on a subset of issues”

This launch lands in a market that’s shifting quickly for the reason that increase of agentic AI. GPT-5.4 arrived simply two days after GPT-5.3, whereas Xiaomi went from MiMo-V2-Professional to MiMo 2.5 Professional—with full multimodal capabilities—in roughly 5 weeks. The hole between GPT-5.4 and GPT-5.5 was about seven weeks. That is the tempo now.

However will this mannequin make a distinction for on a regular basis customers who will not be all the time coding the subsequent massive factor? For those who’re on a free tier, no: GPT-5.5 is not coming to free customers. For those who’re paying for Plus at $20/month, it rolls out right now. We tried testing it underneath our Professional account, however the mannequin was not instantly accessible.

The larger deal might be what GPT-5.5 does inside Codex—OpenAI’s agentic coding setting—the place it’s confirmed to be extra highly effective. “It genuinely appears like I’m working with the next intelligence, and there’s virtually a way of respect,” Pietro Schirano, CEO of MagicPath, stated in a quote shared by OpenAI.

GPT-5.5 Professional, designed for more durable, higher-accuracy work, is rolling out individually to Professional, Enterprise, and Enterprise customers in ChatGPT. On BrowseComp, which assessments a mannequin’s capability to trace down hard-to-find info throughout the online, GPT-5.5 Professional scores 90.1%, forward of Gemini 3.1 Professional at 85.9%.

The mannequin can be essentially the most clever on common primarily based on the Synthetic Evaluation Index. GPT 5.5 stories a extra environment friendly and helpful use of tokens, producing higher outcomes basically.

The pricing, nevertheless, may shock some customers. The API will cost $5 per million enter tokens and $30 per million output tokens when it launches, which OpenAI says is coming “very quickly.” GPT-5.5 Professional within the API will price $30 per million enter tokens and $180 per million output tokens.

These figures are greater than GPT-5.4—$2.50 per million tokens of enter and $15.00 per million tokens of output—whereas pricing for GPT-5.5 Professional stays the identical as GPT-5.4 Professional.

That stated, OpenAI CEO Sam Altman argued on X that token effectivity features offset the price—GPT-5.5 completes the identical Codex duties with fewer tokens, which implies cheaper runs even at the next per-token price.

Only for comparability, Xiaomi MiMo v2.5 Professional prices $1 and $3 per million tokens of enter and output, Minimax M2.7 prices $0.30 and $1.20 respectively, and Kimi K2.5 requires $0.44 and $2.00 per million tokens.