GPT-5.5 on MCP Atlas

BENCHMARK RECORD: BR-00155-009

Canonical URL: https://www.benchmarkregistry.org/records/BR-00155-009

Benchmark scores may depend on benchmark version, evaluation configuration, model snapshot, and evaluator. Records sharing a benchmark name are not necessarily directly comparable.

Record

Record Identifier

BR-00155-009

Record Status

ACTIVE

Created At

2026-07-12T17:19:47.672Z

Updated At

2026-07-12T17:19:47.672Z

Superseded By

Not applicable

Model

Official Model Name

GPT-5.5

Model Identifier

OPNAI-55

Organization

OpenAI

Model Family

GPT

Model Number

55

Tier

Unknown

Model Snapshot

Unknown

Snapshot Label

Unknown

Provider Model Identifier

Unknown

Snapshot Date

Unknown

Benchmark

Benchmark Family

MCP Atlas

Benchmark Version or Variant

Unknown

Benchmark Version Reference

mcp-atlas/default

Benchmark Organization

Scale AI

Benchmark Status

ACTIVE

Result

Metric

Overall

Score

75.3

Numeric Score

75.3

Evaluation Date

Unknown

Reported Date

2026-05-28

Evaluation Context

Configuration Reference

Unspecified

Shots

Unknown

Reasoning Mode

Unknown

Reasoning Effort

Unknown

Pass Count

Unknown

Agent Scaffold

Unknown

Evaluation Harness

Unknown

Temperature

Unknown

Top P

Unknown

Max Output Tokens

Unknown

System Prompt Description

Unknown

Additional Configuration

None reported

Source and Reporting

Primary Source

System Card: Claude Opus 4.8 ↗

Source Type

SYSTEM_CARD

Publisher

Anthropic

Source Published Date

2026-05-28

Source Accessed At

2026-07-12T17:16:28.964Z

Report Type

UNKNOWN

Evaluator

Unknown

Evaluator Type

UNKNOWN

Provenance

Record Status

This record is ACTIVE. Registry identifiers remain reserved when record status changes.