GPQA DiamondVerified
92.6%
GPQA Diamond (AA run)
Models / OpenAI
GPT-5.5 (medium)
GPT-5.5 (medium) · Released 2026-04-23
Listed on Artificial Analysis with API pricing $5/$30 per 1M tokens. Benchmark rows sync from the AA snapshot — see the ledger on this page.
Frontier model tracked on Artificial Analysis. Use the benchmark ledger below for sourced scores; we do not infer numbers beyond published rows.
Composite70
Context128K
Input / 1M$5.0
Output / 1M$30
Knowledge cutoffopen
Output speed87 t/s
Statussolid
Family profile
Best published score in each covered benchmark family.
78/100 avg
- Reasoning
- 93
- Coding
- 55
- Agentic
- 81
- Long context
- 83
4 tested benchmark families
Benchmark placements
Per-benchmark positions
Where GPT-5.5 (medium) places on each public benchmark source that publishes a row. Rank counts every model with a latest row in the same test — not a universal quality score.
| Benchmark | Family | Rank | Score | Source | Date |
|---|---|---|---|---|---|
| AA-LCR | Long context | #13/ 184 | 83 | Artificial Analysis | 2026-09-28 |
| GPQA Diamond | Reasoning | #22/ 184 | 93 | Artificial Analysis | 2026-09-28 |
| Terminal-Bench | Agentic | #24/ 167 | 81 | Artificial Analysis | 2026-09-28 |
| SciCode | Coding | #26/ 97 | 55 | Artificial Analysis | 2026-09-28 |
| Humanity's Last Exam | Reasoning | #31/ 186 | 42 | Artificial Analysis | 2026-09-28 |
| AA output speed | Performance | #72/ 195 | Artificial Analysis | 2026-10-12 |
Family context
Strongest rows in each family
The three highest-scoring models with pages in each capability family. Where GPT-5.5 (medium) shows up, it's highlighted.
ReasoningGPT-5.5 (medium) · 93
- 196
- 295
- 395
Math
- 152
- 252
- 350
CodingGPT-5.5 (medium) · 55
- 174
- 273
- 370
AgenticGPT-5.5 (medium) · 81
- 191
- 289
- 389
Long contextGPT-5.5 (medium) · 83
- 189
- 286
- 385
Newest receipts
6 recentLast 120 days
Benchmark rows added to the public ledger for GPT-5.5 (medium) in the last 120 days. Older rows live in the full table below.
| Benchmark | Family | Score | Source | Days ago |
|---|---|---|---|---|
| AA output speed | Performance | 87 t/s | Artificial Analysis | 10 |
| AA-LCR | Long context | 83% | Artificial Analysis | 24 |
| GPQA Diamond | Reasoning | 92.6% | Artificial Analysis | 24 |
| Humanity's Last Exam | Reasoning | 42.4% | Artificial Analysis | 24 |
| SciCode | Coding | 54.5% | Artificial Analysis | 24 |
| Terminal-Bench | Agentic | 80.52% | Artificial Analysis | 24 |
Family coverage
Best score per family
A high composite that hides a weak family is a trap. These bars surface the families where this model hasn't been publicly tested, and where it leads.
Price vs. performance
Where GPT-5.5 (medium) sits on the scatter
Hover any dot for name, score, and input price. Keyboard: tab through the top twelve, or use the ranking below.
AnthropicOpenAIGoogleAlibabaMetaZhipuxAIDeepSeekMiniMaxXiaomiMoonshotOtherMeituanMistralNVIDIACohere
Full benchmark ledger
Every catalog benchmark for GPT-5.5 (medium). Scores link to the original source; gaps mean no public row exists yet.
6 of 13 catalog benchmarks have a sourced row for GPT-5.5 (medium).
Reasoning
Humanity's Last ExamVerified
42.4%
HLE (AA run)
Coding
SciCodeVerified
54.5%
SciCode (AA run)
Agentic
Terminal-BenchVerified
80.52%
Terminal-Bench v2.1 (AA run)
Long context
AA-LCRVerified
83%
AA-LCR (AA run)
Performance
AA output speedVerified
87 t/s
Median output tokens/s (1k prompt, default provider)
Sources
Where the numbers come from
- Artificial Analysis models index· checked 2026-07-09
Questions this model page answers
Every answer below is assembled from the dated fields on this page. Nothing is written separately for search.
What is GPT-5.5 (medium)?
GPT-5.5 (medium) is a OpenAI model: Listed on Artificial Analysis with API pricing $5/$30 per 1M tokens. Benchmark rows sync from the AA snapshot — see the ledger on this page.
What is GPT-5.5 (medium) for?
Frontier model tracked on Artificial Analysis. Use the benchmark ledger below for sourced scores; we do not infer numbers beyond published rows.
What does GPT-5.5 (medium) cost?
GPT-5.5 (medium) lists $5.0 input and $30 output per 1M tokens. Pricing last checked 2026-07-09.
How large is the GPT-5.5 (medium) context window?
GPT-5.5 (medium) publishes a 128K token context window.
What is the VerdictPal status of GPT-5.5 (medium)?
GPT-5.5 (medium) carries Solid status on the model atlas.
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