Universal · Head-to-head
GPT-5.5 GPT-5
Which should you choose?
Recommended: GPT-5
Medium confidenceOn current verified evidence, GPT-5 is the stronger choice — but different strengths suit different goals.
- GPT-5 has the higher measured Entity Health (88 vs 86).
- GPT-5 leads on more measured signals (2 vs 0).
Based only on measured evidence — measured. Different strengths suit different goals.
AI Comparison
Executive summary
Medium confidenceGPT-5.5 and GPT-5 are compared on 3 shared metrics, health (86 vs 88) and their relationship graphs (8 shared connections). GPT-5 leads on more measured signals; every claim below cites the underlying values. Nothing is inferred without evidence.
Where GPT-5.5 is stronger
No measured edge on shared signals.
Where GPT-5 is stronger
- GPT-5 leads on Entity Health — GPT-5.5 86/100 vs GPT-5 88/100
- GPT-5 leads on mapped relationships — GPT-5.5 9 vs GPT-5 10
Shared strengths
gptmultimodal reasoning modelreasoningapiAvailable
Major differences
Collecting.
Overview & key facts
GPT-5.5MetricGPT-5
- Text, ImageModalitiesText, Image
- 267SDK public repos267
- 128KGitHub followers128K
Entity Health
GPT-5.5
Health86/100
Momentum71/100
Trendsteady
ConfidenceMedium
Capability maturity 93 · Docs official · API public · Ecosystem live (@openai)
GPT-5
Health88/100
Momentum71/100
Trendsteady
ConfidenceMedium
Capability maturity 93 · Docs official · API public · Ecosystem live (@openai)
AI Executive Summary
GPT-5.5
GPT-5.5 is a multimodal reasoning model from OpenAI. It is multimodal (text, image), supports explicit reasoning. It is available via a public API.
GPT-5
GPT-5 is a multimodal reasoning model from OpenAI, released 2025. It is multimodal (text, image), supports explicit reasoning. It is available via a public API.
Strengths & considerations
GPT-5.5
Strengths
- Supports explicit reasoning / extended thinking.
- Documented strong coding capability.
- Multimodal input (Text, Image).
- Active developer ecosystem (128K GitHub followers).
Considerations
- Knowledge cutoff
- Can hallucinate
- No real-time data without tools
GPT-5
Strengths
- Supports explicit reasoning / extended thinking.
- Documented strong coding capability.
- Multimodal input (Text, Image).
- Active developer ecosystem (128K GitHub followers).
Considerations
- Knowledge cutoff
Use-case recommendations
Choose GPT-5.5 for
- • Complex reasoning, math and agentic workflows
- • Software engineering and code generation
- • Vision / document understanding
Choose GPT-5 for
- • Complex reasoning, math and agentic workflows
- • Software engineering and code generation
- • Vision / document understanding
Intelligence Graph overlay
Shared connections (8)
Unique to GPT-5.5 (1)
GPT-5
3 competitors mapped
Unique to GPT-5 (2)
GPT-5.5, DeepSeek-R1
4 competitors mapped
Intelligence Graph
Compare over time
Recent developments
GPT-5.5
GPT-5
Timeline
GPT-5.5
- Developer GitHub organization created · 2015-10-03
GPT-5
- GPT-5 released · 2025-01-01
- Developer GitHub organization created · 2015-10-03
Recent Activity
GPT-5.5
- LiveActive SDK ecosystem — 267 public repositories
GPT-5
- LiveActive SDK ecosystem — 267 public repositories
Methodology & confidence
GPT-5.5: Model facts are curated from public documentation (developer, family, type, documented context window, modalities, capabilities, API availability); SDK-ecosystem signals are live from the official GitHub org. Benchmark scores and live pricing are intentionally not asserted — they are volatile and provider-specific, so they are shown as collecting with a link to official sources rather than estimated.
GPT-5: Model facts are curated from public documentation (developer, family, type, documented context window, modalities, capabilities, API availability); SDK-ecosystem signals are live from the official GitHub org. Benchmark scores and live pricing are intentionally not asserted — they are volatile and provider-specific, so they are shown as collecting with a link to official sources rather than estimated.
Only fields that both entities expose are compared. Unavailable fields are shown as collecting — never estimated to force a comparison.
GPT-5.5 vs GPT-5 — comparison slug gpt-5-5-vs-gpt-5