GPT-5.5 Pro vs GPT-6.1 Sol
Change modelsGPT-5.5 ProOpenAI
GPT-6.1 SolOpenAI
IndexAll categories, out of 100.
74.8 ±8.7
78.0 ±2.2 best
GapIndex points below the top.
−3.2 · no clear gap
Top
CoverageIndex weight that has results.
60%
100% best
SpeedOutput tokens per second.
19/s
34/s best
EloLMArena rating and rank.
—
1446
ReleasedMonth of release.
2026-04
2026-09
Input / 1MUS dollars per 1M input tokens.
$30.00
$2.00 best
Output / 1MUS dollars per 1M output tokens.
$180.00
$10.00 best
Batch output / 1MBatch price per 1M output tokens.
$90.00
$5.00 best
1K chats2K tokens in, 500 out, each.
$150.00
$9.00 best
1K documents20K tokens in, 1K out, each.
$780.00
$50.00 best
1K agent tasks200K tokens in, 20K out, each.
$9,600.00
$600.00 best
ContextMaximum tokens in one request.
1.05M
1.05M
AgenticMulti-step tasks with tools.
71.1
76.0 best
CodingCode writing and repair.
—
75.8
ReasoningLogic problems and puzzles.
81.1
81.8 best
MultimodalTasks with images and text.
—
72.2
KnowledgeFacts and expert knowledge.
69.0
78.0 best
MultilingualTasks in many languages.
—
73.2
InstructionTasks with strict prompt rules.
—
76.6
MathMath problems.
76.3
78.2 best
Benchmarks
10 sharedOnly GPT-5.5 Pro: 5Only GPT-6.1 Sol: 88
GPT-5.5 Pro
GPT-6.1 Sol