GPT-5.1-Codex-Max vs GPT-5.4 mini

Change models
IndexAll categories, out of 100.
53.8 ±6.2
54.5 ±2.4 best
GapIndex points below the top.
−0.7 · no clear gap
Top
CoverageIndex weight that has results.
85%
100% best
SpeedOutput tokens per second.
55/s
95/s best
EloLMArena rating and rank.
—
1412
ReleasedMonth of release.
2025-11
2026-03
Input / 1MUS dollars per 1M input tokens.
$1.25
$0.75 best
Output / 1MUS dollars per 1M output tokens.
$10.00
$4.50 best
Batch output / 1MBatch price per 1M output tokens.
—
$2.25
1K chats2K tokens in, 500 out, each.
$7.50
$3.75 best
1K documents20K tokens in, 1K out, each.
$35.00
$19.50 best
1K agent tasks200K tokens in, 20K out, each.
$450.00
$240.00 best
ContextMaximum tokens in one request.
400K
400K
AgenticMulti-step tasks with tools.
57.5 best
56.1
CodingCode writing and repair.
53.2
55.1 best
ReasoningLogic problems and puzzles.
51.4
52.2 best
MultimodalTasks with images and text.
49.5
54.8 best
KnowledgeFacts and expert knowledge.
55.7 best
53.7
MultilingualTasks in many languages.
—
57.6
InstructionTasks with strict prompt rules.
54.4 best
52.6
MathMath problems.
—
53.9

Benchmarks

11 shared
Only GPT-5.1-Codex-Max: 1Only GPT-5.4 mini: 64
GPT-5.1-Codex-Max
GPT-5.4 mini
25.7%96 / 222
28.1% best91 / 222
69.3%115 / 217
77.0% best82 / 217
5.7%78 / 214
10.0% best65 / 214
86.0%68 / 199
87.5% best56 / 199
39.9% best52 / 164
37.5%63 / 164
83.0%64 / 149
93.4% best31 / 149
70.0%46 / 146
73.3% best29 / 146
83.6% best47 / 142
81.5%60 / 142
22.2%88 / 123
48.0% best70 / 123
72.5%69 / 113
73.3% best65 / 113
IOI v1Coding
21.4% best22 / 61
6.4%42 / 61