OpenAI: GPT-5.5

openai/gpt-5.5

Last Observed: 2026-10-15 06:04:18.064414 UTC

GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...

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Architecture And Modalities · 2

Architecture · Modality API Details /architecture/modality text+image+file->text	text+image+file->text
Architecture · Tokenizer API Details /architecture/tokenizer GPT	GPT

Catalog Identity And Metadata · 42

Context Tokens API Details /context_length 1050000	1,050,000
Created API Details /created 1777051893	2026-04-24 17:31:33 UTC
Description API Details /description GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...	GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
Enkrypt · Bias Score API Details /enkrypt/bias_score 61.5	61.5
Enkrypt · Cbrn Score API Details /enkrypt/cbrn_score 20.67	20.67
Enkrypt · Evaluated At API Details /enkrypt/evaluatedAt Explicit Null	Explicit Null
Enkrypt · Evasion Score API Details /enkrypt/evasion_score Explicit Null	Explicit Null
Enkrypt · Freshness API Details /enkrypt/freshness fresh	fresh
Enkrypt · Harmful Score API Details /enkrypt/harmful_score 0.56	0.56
Enkrypt · Ingested At API Details /enkrypt/ingestedAt 2026-09-04T04:01:19.650Z	2026-09-04T04:01:19.650Z
Enkrypt · Insecure Code Score API Details /enkrypt/insecure_code_score 5.33	5.33
Enkrypt · Jailbreak Score API Details /enkrypt/jailbreak_score 9.20863	9.20863
Enkrypt · Last Checked At API Details /enkrypt/lastCheckedAt 2026-10-15T04:00:26.298Z	2026-10-15T04:00:26.298Z
Enkrypt · Model Name API Details /enkrypt/model_name gpt-5.5	gpt-5.5
Enkrypt · Nist Score API Details /enkrypt/nist_score 19	19
Enkrypt · Owasp Score API Details /enkrypt/owasp_score 22	22
Enkrypt · Provider API Details /enkrypt/provider openai	openai
Enkrypt · Risk Score API Details /enkrypt/risk_score 19.2109	19.2109
Enkrypt · Robustness Score API Details /enkrypt/robustness_score Explicit Null	Explicit Null
Enkrypt · Safety Score API Details /enkrypt/safety_score 28.4683	28.4683
Enkrypt · Source API Details /enkrypt/source Empty String	Empty String
Enkrypt · Stale After API Details /enkrypt/staleAfter 2026-10-16T06:00:26.298Z	2026-10-16T06:00:26.298Z
Enkrypt · Toxicity Score API Details /enkrypt/toxicity_score 8	8
Expiration Date API Details /expiration_date Explicit Null	Explicit Null
Id API Details /id openai/gpt-5.5	openai/gpt-5.5
Is Free API Details /isFree False	False
May Train On Your Prompts API Details /mayTrainOnYourPrompts False	False
Name API Details /name OpenAI: GPT-5.5	OpenAI: GPT-5.5
Opencode · Ai Sdk Provider API Details /opencode/ai_sdk_provider openai	openai
Opencode · Prompt API Details /opencode/prompt gpt55	gpt55
Opencode · Variants · High · Reasoning · Effort API Details /opencode/variants/high/reasoning/effort high	high
Opencode · Variants · High · Reasoning · Enabled API Details /opencode/variants/high/reasoning/enabled True	True
Opencode · Variants · Low · Reasoning · Effort API Details /opencode/variants/low/reasoning/effort low	low
Opencode · Variants · Low · Reasoning · Enabled API Details /opencode/variants/low/reasoning/enabled True	True
Opencode · Variants · Medium · Reasoning · Effort API Details /opencode/variants/medium/reasoning/effort medium	medium
Opencode · Variants · Medium · Reasoning · Enabled API Details /opencode/variants/medium/reasoning/enabled True	True
Opencode · Variants · None · Reasoning · Effort API Details /opencode/variants/none/reasoning/effort none	none
Opencode · Variants · None · Reasoning · Enabled API Details /opencode/variants/none/reasoning/enabled False	False
Opencode · Variants · Xhigh · Reasoning · Effort API Details /opencode/variants/xhigh/reasoning/effort xhigh	xhigh
Opencode · Variants · Xhigh · Reasoning · Enabled API Details /opencode/variants/xhigh/reasoning/enabled True	True
Terminal Bench · Avg Attempt Cost Usd API Details /terminalBench/avgAttemptCostUsd 72.62918640000001	72.62918640000001
Terminal Bench · Overall Score API Details /terminalBench/overallScore 0.74157303	0.74157303

Request Limits · 1

Per Request Limits API Details /per_request_limits Explicit Null	Explicit Null

Pricing · 5

Output Price · USD/Token API Details /pricing/completion 0.00003	0.00003
Pricing · Discount API Details /pricing/discount 0	0
Pricing · Input Cache Read API Details /pricing/input_cache_read 0.0000005	0.0000005
Input Price · USD/Token API Details /pricing/prompt 0.000005	0.000005
Pricing · Web Search API Details /pricing/web_search 0.01	0.01

Provider Limits · 3

Top Provider · Context Length API Details /top_provider/context_length 1050000	1,050,000
Top Provider · Is Moderated API Details /top_provider/is_moderated True	True
Top Provider · Max Completion Tokens API Details /top_provider/max_completion_tokens 128000	128,000

API Structure And Container Types

Architecture API Details /architecture Object · See Fields	Object · See Fields
Architecture · Input Modalities API Details /architecture/input_modalities Array · See Items	Array · See Items
Architecture · Output Modalities API Details /architecture/output_modalities Array · See Items	Array · See Items
Enkrypt API Details /enkrypt Object · See Fields	Object · See Fields
Opencode API Details /opencode Object · See Fields	Object · See Fields
Opencode · Variants API Details /opencode/variants Object · See Fields	Object · See Fields
Opencode · Variants · High API Details /opencode/variants/high Object · See Fields	Object · See Fields
Opencode · Variants · High · Reasoning API Details /opencode/variants/high/reasoning Object · See Fields	Object · See Fields
Opencode · Variants · Low API Details /opencode/variants/low Object · See Fields	Object · See Fields
Opencode · Variants · Low · Reasoning API Details /opencode/variants/low/reasoning Object · See Fields	Object · See Fields
Opencode · Variants · Medium API Details /opencode/variants/medium Object · See Fields	Object · See Fields
Opencode · Variants · Medium · Reasoning API Details /opencode/variants/medium/reasoning Object · See Fields	Object · See Fields
Opencode · Variants · None API Details /opencode/variants/none Object · See Fields	Object · See Fields
Opencode · Variants · None · Reasoning API Details /opencode/variants/none/reasoning Object · See Fields	Object · See Fields
Opencode · Variants · Xhigh API Details /opencode/variants/xhigh Object · See Fields	Object · See Fields
Opencode · Variants · Xhigh · Reasoning API Details /opencode/variants/xhigh/reasoning Object · See Fields	Object · See Fields
Pricing API Details /pricing Object · See Fields	Object · See Fields
Supported Parameters API Details /supported_parameters Array · See Items	Array · See Items
Terminal Bench API Details /terminalBench Object · See Fields	Object · See Fields
Top Provider API Details /top_provider Object · See Fields	Object · See Fields

Architecture · Input Modalities

4 items · source order preserved

file
image
text
pdf

API Details

Item	/architecture/input_modalities/*
1	file
2	image
3	text
4	pdf

Architecture · Output Modalities

1 items · source order preserved

text

API Details

Item	/architecture/output_modalities/*
1	text

Supported Parameters

11 items · source order preserved

include_reasoning
max_completion_tokens
max_tokens
reasoning
reasoning_effort
response_format
seed
structured_outputs
tool_choice
tools
verbosity

API Details

Item	/supported_parameters/*
1	include_reasoning
2	max_completion_tokens
3	max_tokens
4	reasoning
5	reasoning_effort
6	response_format
7	seed
8	structured_outputs
9	tool_choice
10	tools
11	verbosity

Recorded Value History

Historical API Field

Input Price · USD/Token

4 of 4 records plotted · 0 excluded for missing or invalid coordinates.

Up to 100 recorded versions, spaced by observation order rather than elapsed time. Array fields use the minimum numeric item in each version. Missing values are omitted. Select a point to open its archived snapshot; comparison actions use the current listing. History begins at the first recorded baseline.

Axis Scale

Select a point to open its listing or add it to compare.

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