GPT-5.5 Pro vs GPT-5.6 Sol
Change modelsGPT-5.5 ProOpenAI
GPT-5.6 SolOpenAI
IndexAll categories, out of 100.
74.8 ±8.7 best
73.0 ±1.9
GapIndex points below the top.
Top
−1.8 · no clear gap
CoverageIndex weight that has results.
60%
100% best
SpeedOutput tokens per second.
19/s
64/s best
EloLMArena rating and rank.
—
1457
ReleasedMonth of release.
2026-04
2026-07
Input / 1MUS dollars per 1M input tokens.
$30.00
$4.40 best
Output / 1MUS dollars per 1M output tokens.
$180.00
$22.00 best
Batch output / 1MBatch price per 1M output tokens.
$90.00
$10.00 best
1K chats2K tokens in, 500 out, each.
$150.00
$19.80 best
1K documents20K tokens in, 1K out, each.
$780.00
$110.00 best
1K agent tasks200K tokens in, 20K out, each.
$9,600.00
$1,320.00 best
ContextMaximum tokens in one request.
1.05M
1.05M
AgenticMulti-step tasks with tools.
71.1
71.9 best
CodingCode writing and repair.
—
70.4
ReasoningLogic problems and puzzles.
81.1 best
76.3
MultimodalTasks with images and text.
—
72.6
KnowledgeFacts and expert knowledge.
69.0
72.7 best
MultilingualTasks in many languages.
—
66.4
InstructionTasks with strict prompt rules.
—
64.5
MathMath problems.
76.3 best
75.1
Benchmarks
11 sharedOnly GPT-5.5 Pro: 4Only GPT-5.6 Sol: 114
GPT-5.5 Pro
GPT-5.6 Sol