GPT-5.5 Instant (May 2026)

GPT-5.5 Instant (May 2026)

OpenAI · Released May 5, 2026 Professional New
Intelligence #10 / 565
82.0 Our Score
AA Index #52 / 370
41.8 Artificial Analysis
Input #528 / 565
$5.00 per 1M tokens
Output #537 / 565
$30.00 per 1M tokens
Context
— Not reported

Analysis Summary

GPT-5.5 Instant (May 2026) sits in the Professional tier on our leaderboard, ranked #10 of 565 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 Instant from OpenAI delivers strong coding and agentic scores at a mid-tier intelligence level, with competitive instruction following, though pricing is high relative to its benchmark position.

Assessed May 31, 2026

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

Performance Profile

Intelligence6Technical6.5Value4.5Content7.2
Intelligence 6/10
Technical 6.5/10
Content 7.2/10
Value 4.5/10

How GPT-5.5 Instant (May 2026) compares

GPT-5.5 Instant (May 2026) ranks #52 of 370 AI models we track for overall intelligence, #20 of 307 for coding, #100 of 282 for agentic tasks. At $5.00 per million input tokens it is cheaper than 7% of comparable models.

Performance Indices

Source: Artificial Analysis

41.8 Intelligence Index
45.1 Coding Index
45.9 Agentic Index

Benchmark Scores

Intelligence

GPQA Diamond 84.6% Graduate-level scientific reasoning
HLE 20.3% Humanity's Last Exam
SciCode 50.3% Scientific computing

Technical

TerminalBench Hard 42.4% Agentic terminal tasks
τ²-Bench 49.4% Conversational agent benchmark

Content

IFBench 71.5% Instruction following
LCR 55.7% Long-context reasoning

Benchmark data from Artificial Analysis and Hugging Face

How does GPT-5.5 Instant (May 2026) stack up?

Compare side-by-side with other professional models.

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Model Information

ProviderOpenAI
Release Date May 5, 2026
Status Active

Pricing

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

Leaderboard Categories

Frequently asked questions about GPT-5.5 Instant (May 2026)

How much does GPT-5.5 Instant (May 2026) cost?

GPT-5.5 Instant (May 2026) costs $5.00 per million input tokens and $30.00 per million output tokens.

Is GPT-5.5 Instant (May 2026) good for coding?

On our coding benchmark index, GPT-5.5 Instant (May 2026) ranks #20 of 307 models, placing it in the top quartile of the field for code generation and debugging.

Who created GPT-5.5 Instant (May 2026)?

GPT-5.5 Instant (May 2026) is developed by OpenAI and was released on May 5, 2026.