Claude Sonnet 5.5 vs GPT-5.5
Change modelsClaude Sonnet 5.5Anthropic
GPT-5.5OpenAI
IndexAll categories, out of 100.
77.2 ±2.6 best
69.1 ±2.5
GapIndex points below the top.
Top
−8.1
CoverageIndex weight that has results.
95%
95%
SpeedOutput tokens per second.
107/s best
52/s
EloLMArena rating and rank.
1469 best
1466
ReleasedMonth of release.
2026-09
2026-04
Input / 1MUS dollars per 1M input tokens.
$2.00 best
$5.00
Output / 1MUS dollars per 1M output tokens.
$10.00 best
$30.00
Batch output / 1MBatch price per 1M output tokens.
$5.00 best
$15.00
1K chats2K tokens in, 500 out, each.
$9.00 best
$25.00
1K documents20K tokens in, 1K out, each.
$50.00 best
$130.00
1K agent tasks200K tokens in, 20K out, each.
$600.00 best
$1,600.00
ContextMaximum tokens in one request.
1M
1.05M best
AgenticMulti-step tasks with tools.
77.5 best
65.8
CodingCode writing and repair.
80.8 best
65.5
ReasoningLogic problems and puzzles.
77.8 best
74.1
MultimodalTasks with images and text.
74.4 best
66.8
KnowledgeFacts and expert knowledge.
71.3 best
70.4
MultilingualTasks in many languages.
—
—
InstructionTasks with strict prompt rules.
41.5
64.8 best
MathMath problems.
76.1 best
74.7
Benchmarks
55 sharedOnly Claude Sonnet 5.5: 73Only GPT-5.5: 57
Claude Sonnet 5.5
GPT-5.5