GPT-5.4 Pro vs GPT-5.5
Change modelsGPT-5.4 ProOpenAI
GPT-5.5OpenAI
IndexAll categories, out of 100.
73.3 ±8.7 best
69.1 ±2.5
GapIndex points below the top.
Top
−4.2 · no clear gap
CoverageIndex weight that has results.
60%
95% best
SpeedOutput tokens per second.
21/s
52/s best
EloLMArena rating and rank.
—
1466
ReleasedMonth of release.
2026-03
2026-04
Input / 1MUS dollars per 1M input tokens.
$30.00
$5.00 best
Output / 1MUS dollars per 1M output tokens.
$180.00
$30.00 best
Batch output / 1MBatch price per 1M output tokens.
$90.00
$15.00 best
1K chats2K tokens in, 500 out, each.
$150.00
$25.00 best
1K documents20K tokens in, 1K out, each.
$780.00
$130.00 best
1K agent tasks200K tokens in, 20K out, each.
$9,600.00
$1,600.00 best
ContextMaximum tokens in one request.
1.05M
1.05M
AgenticMulti-step tasks with tools.
70.5 best
65.8
CodingCode writing and repair.
—
65.5
ReasoningLogic problems and puzzles.
80.4 best
74.1
MultimodalTasks with images and text.
—
66.8
KnowledgeFacts and expert knowledge.
67.2
70.4 best
MultilingualTasks in many languages.
—
—
InstructionTasks with strict prompt rules.
—
64.8
MathMath problems.
75.3 best
74.7
Benchmarks
15 sharedOnly GPT-5.4 Pro: 3Only GPT-5.5: 97
GPT-5.4 Pro
GPT-5.5