Gemini 4 Carbon vs GPT-5.5 Pro

Change models
IndexAll categories, out of 100.
82.7 ±5.1 best
74.8 ±8.7
GapIndex points below the top.
Top
−7.9 · no clear gap
CoverageIndex weight that has results.
80% best
60%
SpeedOutput tokens per second.
31/s best
19/s
EloLMArena rating and rank.
1538
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ReleasedMonth of release.
2026-10
2026-04
Input / 1MUS dollars per 1M input tokens.
$2.00 best
$30.00
Output / 1MUS dollars per 1M output tokens.
$10.00 best
$180.00
Batch output / 1MBatch price per 1M output tokens.
$5.00 best
$90.00
1K chats2K tokens in, 500 out, each.
$9.00 best
$150.00
1K documents20K tokens in, 1K out, each.
$50.00 best
$780.00
1K agent tasks200K tokens in, 20K out, each.
$600.00 best
$9,600.00
ContextMaximum tokens in one request.
1.05M
1.05M
AgenticMulti-step tasks with tools.
83.2 best
71.1
CodingCode writing and repair.
80.5
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ReasoningLogic problems and puzzles.
83.9 best
81.1
MultimodalTasks with images and text.
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KnowledgeFacts and expert knowledge.
79.5 best
69.0
MultilingualTasks in many languages.
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InstructionTasks with strict prompt rules.
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MathMath problems.
77.2 best
76.3

Benchmarks

9 shared
Only Gemini 4 Carbon: 30Only GPT-5.5 Pro: 6
Gemini 4 Carbon
GPT-5.5 Pro
96.5% best1 / 217
93.9%14 / 217
100.0%1 / 200
100.0%1 / 200
92.1% best5 / 131
84.2%16 / 131
97.5% best5 / 126
95.0%19 / 126
97.9% best3 / 122
90.4%15 / 122
98.5% best6 / 116
98.0%11 / 116
Chess PuzzlesReasoning
78.0% best2 / 90
62.0%8 / 90
90.5% best6 / 90
87.7%11 / 90
95.1% best4 / 72
78.0%12 / 72