GPT-5.5 vs GPT-5.5 Pro
Change modelsGPT-5.5OpenAI
GPT-5.5 ProOpenAI
IndexAll categories, out of 100.
69.1 ±2.5
74.8 ±8.7 best
GapIndex points below the top.
−5.7 · no clear gap
Top
CoverageIndex weight that has results.
95% best
60%
SpeedOutput tokens per second.
52/s best
19/s
EloLMArena rating and rank.
1466
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ReleasedMonth of release.
2026-04
2026-04
Input / 1MUS dollars per 1M input tokens.
$5.00 best
$30.00
Output / 1MUS dollars per 1M output tokens.
$30.00 best
$180.00
Batch output / 1MBatch price per 1M output tokens.
$15.00 best
$90.00
1K chats2K tokens in, 500 out, each.
$25.00 best
$150.00
1K documents20K tokens in, 1K out, each.
$130.00 best
$780.00
1K agent tasks200K tokens in, 20K out, each.
$1,600.00 best
$9,600.00
ContextMaximum tokens in one request.
1.05M
1.05M
AgenticMulti-step tasks with tools.
65.8
71.1 best
CodingCode writing and repair.
65.5
—
ReasoningLogic problems and puzzles.
74.1
81.1 best
MultimodalTasks with images and text.
66.8
—
KnowledgeFacts and expert knowledge.
70.4 best
69.0
MultilingualTasks in many languages.
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InstructionTasks with strict prompt rules.
64.8
—
MathMath problems.
74.7
76.3 best
Benchmarks
15 sharedOnly GPT-5.5: 97
GPT-5.5
GPT-5.5 Pro