DeepSeek V4.1 Flash 1017 vs GPT-5.5 Pro
Change models
GPT-5.5 ProOpenAI
IndexAll categories, out of 100.
68.5 ±2.6
74.8 ±8.7 best
GapIndex points below the top.
−6.3 · no clear gap
Top
CoverageIndex weight that has results.
95% best
60%
SpeedOutput tokens per second.
261/s best
19/s
EloLMArena rating and rank.
1463
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ReleasedMonth of release.
2026-10
2026-04
Input / 1MUS dollars per 1M input tokens.
$0.022 best
$30.00
Output / 1MUS dollars per 1M output tokens.
$0.40 best
$180.00
Batch output / 1MBatch price per 1M output tokens.
$0.20 best
$90.00
1K chats2K tokens in, 500 out, each.
$0.244 best
$150.00
1K documents20K tokens in, 1K out, each.
$0.84 best
$780.00
1K agent tasks200K tokens in, 20K out, each.
$12.40 best
$9,600.00
ContextMaximum tokens in one request.
1.05M
1.05M
AgenticMulti-step tasks with tools.
72.2 best
71.1
CodingCode writing and repair.
69.8
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ReasoningLogic problems and puzzles.
65.0
81.1 best
MultimodalTasks with images and text.
62.2
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KnowledgeFacts and expert knowledge.
64.2
69.0 best
MultilingualTasks in many languages.
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InstructionTasks with strict prompt rules.
68.3
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MathMath problems.
65.4
76.3 best
Benchmarks
11 sharedOnly DeepSeek V4.1 Flash 1017: 83Only GPT-5.5 Pro: 4
DeepSeek V4.1 Flash 1017
GPT-5.5 Pro