GPT-5.5 Instant (May 2026)
Released · 12 days after GPT-5.5
Key info
Context window
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Max output
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Input price
$5.00 /1M
Output price
$30.00 /1M
Prices are the median across providers tracked by Artificial Analysis, not Opper billing.
Benchmarks
Independent benchmark scores: the Intelligence Index and the individual evaluations behind it, grouped by skill.
Global rank#142 of 511 LLMs
TierEfficient
Intelligence Index (previous version)22.7
Agentic & knowledge work
Terminal-Bench Hard
42%
τ²-Bench Telecom
49%
Science & reasoning
Humanity's Last Exam
22%
GPQA Diamond
85%
Long-context reasoning
66%
Math & instruction following
IFBench
72%
See full leaderboard →Benchmarks via Artificial Analysis · View on AA
Available routes
No routes currently available — GPT-5.5 Instant (May 2026) isn't routed through the Opper gateway right now. It's tracked here for its release history.
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