Claude Opus 5 vs GPT-5.5 Pro

Change models
Claude Opus 5Anthropic
IndexAll categories, out of 100.
73.8 ±1.9
74.8 ±8.7 best
GapIndex points below the top.
−1.0 · no clear gap
Top
CoverageIndex weight that has results.
100% best
60%
SpeedOutput tokens per second.
48/s best
19/s
EloLMArena rating and rank.
1502
—
ReleasedMonth of release.
2026-07
2026-04
Input / 1MUS dollars per 1M input tokens.
$5.00 best
$30.00
Output / 1MUS dollars per 1M output tokens.
$25.00 best
$180.00
Batch output / 1MBatch price per 1M output tokens.
$12.50 best
$90.00
1K chats2K tokens in, 500 out, each.
$22.50 best
$150.00
1K documents20K tokens in, 1K out, each.
$125.00 best
$780.00
1K agent tasks200K tokens in, 20K out, each.
$1,500.00 best
$9,600.00
ContextMaximum tokens in one request.
1M
1.05M best
AgenticMulti-step tasks with tools.
71.6 best
71.1
CodingCode writing and repair.
74.8
—
ReasoningLogic problems and puzzles.
75.4
81.1 best
MultimodalTasks with images and text.
72.5
—
KnowledgeFacts and expert knowledge.
73.1 best
69.0
MultilingualTasks in many languages.
63.6
—
InstructionTasks with strict prompt rules.
55.6
—
MathMath problems.
74.8
76.3 best

Benchmarks

13 shared
Only Claude Opus 5: 137Only GPT-5.5 Pro: 2
Claude Opus 5
GPT-5.5 Pro
93.9%14 / 217
93.9%14 / 217
29.1%13 / 214
30.6% best9 / 214
98.9%22 / 200
100.0% best1 / 200
90.4% best8 / 131
84.2%16 / 131
97.5% best5 / 126
95.0%19 / 126
97.1% best6 / 122
90.4%15 / 122
99.0% best2 / 116
98.0%11 / 116
Chess PuzzlesReasoning
43.0%31 / 90
62.0% best8 / 90
85.6%15 / 90
87.7% best11 / 90
64.7% best4 / 77
57.2%11 / 77
73.2%15 / 72
78.0% best12 / 72
BrowseCompAgentic
90.8% best8 / 63
90.1%10 / 63
56.3% best6 / 53
43.1%23 / 53