LOADING DATASHEET
GROUNDED IN REAL HUMAN CONVERSATIONSYOUR BENCH
GPT 5.5
by OpenAI
CLOSEDHOSTEDWRITING HELPCODING HELPFAST RESPONSESPROBLEM SOLVING
RANKED #178 OF 250 ASSISTANTS · OVERALL #286 OF 6,530 · VIBE SCORE 5.5 · 1,908 VOICES
A fast, high-end AI assistant built to help with demanding writing and coding tasks.
HAPPY7.3
268 mentions
SAD7.7
255 mentions
VIBE TRAJECTORY
26 weeks · 2,724 voices
QUIETLY DEGRADING
Recent vibe and chatter are both sliding.
HOW TO USE IT
Closed model. OpenAI hosts it, so you use it through an app or an API.
PREFER OPEN SOURCE? THE CROWD HAS PICKS
GPT 5.5 is closed, so you rent it. These open-weight models can genuinely stand in for it. Download once, own forever.
- OPEN WEIGHTS6.9
Kimi K3MoonshotPick for frontier-level multimodal reasoning and a massive 1M context window.🏆 NEAR-PEER QUALITY💻 STRONG AT CODE❤️ CROWD FAVORITE2.0k VOICESMATCH★★★ - OPEN WEIGHTS5.4
Llama 4 MaverickMetaPick for state-of-the-art multimodal reasoning and excellent coding help.🏆 NEAR-PEER QUALITY💻 STRONG AT CODE❤️ CROWD FAVORITE2.1k VOICESMATCH★★★
WHAT THE INTERNET SAYS
Users love GPT 5.5 for its fast answers and top-tier coding skills, but many find it quite expensive. Others complain about context limits, occasional hallucinations, and unwanted refusals.
1542 POSTS · 366 COMMENTS · REDDIT · HACKER NEWS · BLUESKY · X · DEV FORUMS · GITHUB · LEMMY · DEV.TO · BLOG
PEOPLE LOVE
- Popular for coding help (30 mentions)
- Answers come back fast (8 mentions)
- Good at writing and wording things (3 mentions)
PEOPLE COMPLAIN ABOUT
- Outages, errors, or limits get in the way (20 mentions)
- People find it expensive (15 mentions)
- Sometimes makes things up (13 mentions)
- Refuses or lectures more than people like (5 mentions)
TOPIC BY TOPIC
- Help with codePEOPLE LOVE THIS
30 thumbs up · 6 thumbs down
- PriceMIXED FEELINGS
16 thumbs up · 15 thumbs down
- Working when you need itA SORE SPOT
6 thumbs up · 20 thumbs down
- Getting facts rightA SORE SPOT
5 thumbs up · 13 thumbs down
- SpeedPEOPLE LOVE THIS
8 thumbs up · 1 thumbs down
- Saying no too muchA SORE SPOT
0 thumbs up · 5 thumbs down
- WritingPEOPLE LOVE THIS
3 thumbs up · 1 thumbs down
IN THEIR OWN WORDS
- FROM BLOG >
“I’m at an interesting balance where I think GPT 5.5 is a bit smarter of a model and I love the Codex App, so I’m structuring much of my work to be possible there.”
- FROM REDDIT >
“gpt 5.5 is more expensive than opus.”
- FROM REDDIT >
“I kept scratching my head why every bench was saying GPT 5.5 is just the best, and continiously getting downvoted for saying others how much it sucked because it just overloads the code...”
- FROM REDDIT >
“gpt 5.5 is good but I'm having hallucination/context issues.”
LOOKING FOR AN ALTERNATIVE?
Checked picks first: tags say why you would switch, stars say how fully each one stands in for GPT 5.5.
Grok 4.6
Qwen3.8 27B> SOURCES (12)
- REDDIT · 2026-06-15 · 1720 UPVOTESThe White House Is Ratcheting Up Its War Against Anthropic
The White House Is Ratcheting Up Its War Against Anthropic
- X · 2026-08-14 · 1640 UPVOTESGPT 5.6 just solved one of my maths problems that GPT 5.5 insisted for 6 months is unsolvable🤔
GPT 5.6 just solved one of my maths problems that GPT 5.5 insisted for 6 months is unsolvable🤔
- HACKER NEWS · 2026-04-23 · 1580 UPVOTESGPT-5.5
GPT-5.5
- REDDIT · 2026-07-26 · 1110 UPVOTESDifferences Between Fable 5 and Opus 5 on MineBench.ai
Differences Between Fable 5 and Opus 5 on MineBench.ai
- X · 2026-08-14 · 952 UPVOTES1/ Today, we introduce Faraday, a 27B-parameter AI Scientist that extends the capabilities of coding agents with a layer
1/ Today, we introduce Faraday, a 27B-parameter AI Scientist that extends the capabilities of coding agents with a layer
- REDDIT · 2025-12-04 · 912 UPVOTESGemini 3 "Deep Think" benchmarks released: Hits 45.1% on ARC-AGI-2 more than doubling GPT-5.1
Gemini 3 "Deep Think" benchmarks released: Hits 45.1% on ARC-AGI-2 more than doubling GPT-5.1
- REDDIT · 2026-04-30 · 893 UPVOTESGPT5.5 slightly outperformed Mythos on a multi-step cyber-attack simulation. One challenge that took a human expert 12 hrs took GPT-5.5…
GPT5.5 slightly outperformed Mythos on a multi-step cyber-attack simulation. One challenge that took a human expert 12 hrs took GPT-5.5 only 11 min at a $1.73 cost
- REDDIT · 2026-04-23 · 858 UPVOTESIntroducing GPT-5.5 OpenAI
Introducing GPT-5.5 OpenAI
- REDDIT · 2026-07-01 · 704 UPVOTESI have created a Chrome extension that fact checks YouTube videos as you watch
I have created a Chrome extension that fact checks YouTube videos as you watch
- REDDIT · 2026-05-02 · 655 UPVOTESAnthropic just passed OpenAI in valuation and revenue
Anthropic just passed OpenAI in valuation and revenue
- REDDIT · 2024-05-21 · 614 UPVOTESComputing Analogy: GPT-3: Was a shark --- GPT-4: Was an orca --- GPT-5: Will be a whale! 🐳
Computing Analogy: GPT-3: Was a shark --- GPT-4: Was an orca --- GPT-5: Will be a whale! 🐳
- HACKER NEWS · 2026-06-19 · 585 UPVOTESGPT-5.5 hallucinates 3x more than MIT-licensed GLM-5.2
GPT-5.5 hallucinates 3x more than MIT-licensed GLM-5.2