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Models / OpenAI

GPT-5.5 (high)

GPT-5.5 (high) · Released 2026-04-23

AA Intelligence Index 53.1. 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.

#12 of 168 on AA Index · current snapshot
55 AA Index · 10 benchmark rows · 1 sourcesPosition is benchmark-specific — not a cross-family or cross-source ranking.
Composite64
Context128K
Input / 1M$5.0
Output / 1M$30
Knowledge cutoffopen
Statussolid

Family profile

Best published score in each covered benchmark family.

77/100 avg
Reasoning
93
Coding
56
Agentic
79
Long context
79

4 tested benchmark families

Benchmark placements

Where GPT-5.5 (high) 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.

BenchmarkFamilyRankScoreSourceDate
GPQA DiamondReasoning#11/ 18593Artificial Analysis2026-09-01
SciCodeCoding#12/ 18056Artificial Analysis2026-09-01
AA-LCRLong context#14/ 17979Artificial Analysis2026-09-01
Humanity's Last ExamReasoning#14/ 18045Artificial Analysis2026-09-01
Artificial Analysis Intelligence IndexReasoning#20/ 18755Artificial Analysis2026-09-01
τ³-Bench BankingAgentic#24/ 10637Artificial Analysis2026-09-01
Terminal-BenchAgentic#27/ 18479Artificial Analysis2026-09-01
IFBenchReasoning#43/ 12772Artificial Analysis2026-09-01
AA time to first tokenPerformance#138/ 186Artificial Analysis2026-09-01
AA output speedPerformance#139/ 187Artificial Analysis2026-09-01
Family context

The three highest-scoring models with pages in each capability family. Where GPT-5.5 (high) shows up, it's highlighted.

ReasoningGPT-5.5 (high) · 93
  1. 1
    Claude Mythos Preview
    95
  2. 2
    Gemini 3.7 Flash
    95
  3. 3
    Grok 4.6
    95
CodingGPT-5.5 (high) · 56
  1. 1
    GPT 5.5
    96
  2. 2
    Claude Opus 4.8
    96
  3. 3
    Claude Opus 4.6
    96
AgenticGPT-5.5 (high) · 79
  1. 1
    GPT 5.5
    100
  2. 2
    Claude Opus 4.8
    100
  3. 3
    Claude Fable 5
    100
Long contextGPT-5.5 (high) · 79
  1. 1
    Muse Spark 1.2
    83
  2. 2
    Kimi K3
    83
  3. 3
    Gemini 3.5 Flash
    81
Newest receipts

Benchmark rows added to the public ledger for GPT-5.5 (high) in the last 120 days. Older rows live in the full table below.

10 recent
BenchmarkFamilyScoreSourceDays ago
AA-LCRLong context79%Artificial Analysis5
AA output speedPerformance0 t/sArtificial Analysis5
AA time to first tokenPerformance0.00sArtificial Analysis5
Artificial Analysis Intelligence IndexReasoning54.7%Artificial Analysis5
GPQA DiamondReasoning93.2%Artificial Analysis5
Humanity's Last ExamReasoning45%Artificial Analysis5
IFBenchReasoning71.63%Artificial Analysis5
SciCodeCoding55.9%Artificial Analysis5
τ³-Bench BankingAgentic36.7%Artificial Analysis5
Terminal-BenchAgentic79.4%Artificial Analysis5
Family coverage

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.

Reasoning93
Coding56
Agentic79
Long context79
Price vs. performance
0255075100$0.10$0.30$1$3$10$30input USD / 1M tokens · log scale →← intelligence

Hover any dot for name, score, and input price. Keyboard: tab through the top twelve, or use the ranking below.

AnthropicOpenAIMistralAlibabaDeepSeekGoogleMoonshotMetaMiniMaxxAIZhipuXiaomiOtherMeituanCohereNVIDIA

Full benchmark ledger

Every catalog benchmark for GPT-5.5 (high). Scores link to the original source; gaps mean no public row exists yet.

10 sourced rows

10 of 37 catalog benchmarks have a sourced row for GPT-5.5 (high).

Reasoning

Coding

Agentic

Long context

Performance

Sources