Gemini 3.8 Flash vs GPT-5.5
Change modelsGemini 3.8 FlashGoogle
GPT-5.5OpenAI
IndexAll categories, out of 100.
67.8 ±2.5
69.1 ±2.5 best
GapIndex points below the top.
−1.3 · no clear gap
Top
CoverageIndex weight that has results.
95%
95%
SpeedOutput tokens per second.
68/s best
52/s
EloLMArena rating and rank.
1500 best
1466
ReleasedMonth of release.
2026-09
2026-04
Input / 1MUS dollars per 1M input tokens.
$0.825 best
$5.00
Output / 1MUS dollars per 1M output tokens.
$4.13 best
$30.00
Batch output / 1MBatch price per 1M output tokens.
$1.88 best
$15.00
1K chats2K tokens in, 500 out, each.
$3.71 best
$25.00
1K documents20K tokens in, 1K out, each.
$20.63 best
$130.00
1K agent tasks200K tokens in, 20K out, each.
$247.50 best
$1,600.00
ContextMaximum tokens in one request.
1.05M
1.05M
AgenticMulti-step tasks with tools.
65.3
65.8 best
CodingCode writing and repair.
66.2 best
65.5
ReasoningLogic problems and puzzles.
68.3
74.1 best
MultimodalTasks with images and text.
67.1 best
66.8
KnowledgeFacts and expert knowledge.
70.9 best
70.4
MultilingualTasks in many languages.
—
—
InstructionTasks with strict prompt rules.
91.3 best
64.8
MathMath problems.
64.3
74.7 best
Benchmarks
68 sharedOnly Gemini 3.8 Flash: 38Only GPT-5.5: 44
Gemini 3.8 Flash
GPT-5.5