GPT-5.5 (medium)

GPT-5.5 (medium)

OpenAI · Released Apr 23, 2026 Frontier New
Intelligence #11 / 523
85.4 Our Score
Speed #153 / 244
76.5 tokens / sec
Input #494 / 525
$5.00 per 1M tokens
Output #502 / 525
$30.00 per 1M tokens
Context
Not reported

Analysis Summary

GPT-5.5 (medium) sits in the Frontier tier on our leaderboard, ranked #11 of 523 published models on overall intelligence. At $5.00 input and $30.00 output per 1M tokens, it is among the most expensive on the market.

Editorial notes

GPT-5.5 Medium from OpenAI ranks among the top models in the field, with world-class reasoning, coding, and instruction following; premium pricing at $5/$30 per million tokens is the only constraint for cost-sensitive workflows.

Assessed April 24, 2026

Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?

Performance Profile

Intelligence9.7Technical9.9Value4.5Content9
Intelligence 9.7/10
Technical 9.9/10
Content 9/10
Value 4.5/10

Performance Indices

Source: Artificial Analysis

56.7 Intelligence Index
56.2 Coding Index
74.7 Agentic Index

This model was released recently. Independent benchmark evaluations are typically completed within days of release — these figures are preliminary and are likely to be updated as testing is finalised.

Benchmark Scores

Intelligence

GPQA Diamond 92.6% Graduate-level scientific reasoning
HLE 40.6% Humanity's Last Exam
SciCode 53.5% Scientific computing

Technical

TerminalBench Hard 57.6% Agentic terminal tasks
τ²-Bench 91.8% Conversational agent benchmark

Content

IFBench 71% Instruction following
LCR 72.3% Long-context reasoning

Benchmark data from Artificial Analysis and Hugging Face

How does GPT-5.5 (medium) stack up?

Compare side-by-side with other frontier models.

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Model Information

ProviderOpenAI
Release Date April 23, 2026
Status Active

Pricing

Token Type Cost per 1M tokens Cost per 1K tokens
Input $5.00 $0.005000
Output $30.00 $0.030000

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