Claude Mythos 5 vs Claude Opus 5
Change modelsClaude Mythos 5Anthropic
Claude Opus 5Anthropic
IndexAll categories, out of 100.
70.8 ±8.6
73.8 ±1.9 best
GapIndex points below the top.
−3.0 · no clear gap
Top
CoverageIndex weight that has results.
65%
100% best
SpeedOutput tokens per second.
—
48/s
EloLMArena rating and rank.
—
1502
ReleasedMonth of release.
2026-06
2026-07
Input / 1MUS dollars per 1M input tokens.
$10.00
$5.00 best
Output / 1MUS dollars per 1M output tokens.
$50.00
$25.00 best
Batch output / 1MBatch price per 1M output tokens.
—
$12.50
1K chats2K tokens in, 500 out, each.
$45.00
$22.50 best
1K documents20K tokens in, 1K out, each.
$250.00
$125.00 best
1K agent tasks200K tokens in, 20K out, each.
$3,000.00
$1,500.00 best
ContextMaximum tokens in one request.
1M
1M
AgenticMulti-step tasks with tools.
70.0
71.6 best
CodingCode writing and repair.
74.4
74.8 best
ReasoningLogic problems and puzzles.
—
75.4
MultimodalTasks with images and text.
70.8
72.5 best
KnowledgeFacts and expert knowledge.
74.9 best
73.1
MultilingualTasks in many languages.
—
63.6
InstructionTasks with strict prompt rules.
—
55.6
MathMath problems.
—
74.8
Benchmarks
5 sharedOnly Claude Mythos 5: 7Only Claude Opus 5: 145
Claude Mythos 5
Claude Opus 5