DeepSeek V4.1 Flash 1017 vs GPT-5.5
Change models
GPT-5.5OpenAI
IndexAll categories, out of 100.
68.5 ±2.6
69.1 ±2.5 best
GapIndex points below the top.
−0.6 · no clear gap
Top
CoverageIndex weight that has results.
95%
95%
SpeedOutput tokens per second.
261/s best
52/s
EloLMArena rating and rank.
1463
1466 best
ReleasedMonth of release.
2026-10
2026-04
Input / 1MUS dollars per 1M input tokens.
$0.022 best
$5.00
Output / 1MUS dollars per 1M output tokens.
$0.40 best
$30.00
Batch output / 1MBatch price per 1M output tokens.
$0.20 best
$15.00
1K chats2K tokens in, 500 out, each.
$0.244 best
$25.00
1K documents20K tokens in, 1K out, each.
$0.84 best
$130.00
1K agent tasks200K tokens in, 20K out, each.
$12.40 best
$1,600.00
ContextMaximum tokens in one request.
1.05M
1.05M
AgenticMulti-step tasks with tools.
72.2 best
65.8
CodingCode writing and repair.
69.8 best
65.5
ReasoningLogic problems and puzzles.
65.0
74.1 best
MultimodalTasks with images and text.
62.2
66.8 best
KnowledgeFacts and expert knowledge.
64.2
70.4 best
MultilingualTasks in many languages.
—
—
InstructionTasks with strict prompt rules.
68.3 best
64.8
MathMath problems.
65.4
74.7 best
Benchmarks
58 sharedOnly DeepSeek V4.1 Flash 1017: 36Only GPT-5.5: 54
DeepSeek V4.1 Flash 1017
GPT-5.5