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GPT-5.5 Instant

openai/gpt-5.5-instant-05-26
  • OpenAI
  • Family · GPT-5 Instant
  • Released 25 Jun 2026
Not on OSMEXO yet
Scores · standing
Intelligence26.0#87/489
Coding39.4#91/196

News & trends

News · latest from OpenAI

Benchmarks

bar = share of the top score · Benchmark data: Artificial Analysis
GPQA Diamond#98 of 445
84.6%
IFBench#49 of 328
71.5%
Long-context reasoning#141 of 393
70.0%
SciCode#46 of 160
52.5%
Terminal-Bench Hard#30 of 311
42.4%
τ²-Bench#138 of 319
49.4%
Coding index#91 of 196
39.4
Intelligence index#87 of 489
26.0
Speed · median across providers, latest day
Output speed#31/101151 tok/s1.3× faster than median
First token#480.83 s1.2× quicker than median
First answer token#5314 sthinking included

Alternatives

other vendors · similar capability

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