Claude Mythos 5 vs GPT-5.6 Terra
Change modelsClaude Mythos 5Anthropic
GPT-5.6 TerraOpenAI
IndexAll categories, out of 100.
70.8 ±8.6 best
68.9 ±2.0
GapIndex points below the top.
Top
−1.9 · no clear gap
CoverageIndex weight that has results.
65%
100% best
SpeedOutput tokens per second.
—
66/s
EloLMArena rating and rank.
—
1449
ReleasedMonth of release.
2026-06
2026-07
Input / 1MUS dollars per 1M input tokens.
$10.00
$2.00 best
Output / 1MUS dollars per 1M output tokens.
$50.00
$12.00 best
Batch output / 1MBatch price per 1M output tokens.
—
$6.00
1K chats2K tokens in, 500 out, each.
$45.00
$10.00 best
1K documents20K tokens in, 1K out, each.
$250.00
$52.00 best
1K agent tasks200K tokens in, 20K out, each.
$3,000.00
$640.00 best
ContextMaximum tokens in one request.
1M
1.05M best
AgenticMulti-step tasks with tools.
70.0 best
68.2
CodingCode writing and repair.
74.4 best
68.4
ReasoningLogic problems and puzzles.
—
72.5
MultimodalTasks with images and text.
70.8 best
67.3
KnowledgeFacts and expert knowledge.
74.9 best
65.5
MultilingualTasks in many languages.
—
60.7
InstructionTasks with strict prompt rules.
—
56.4
MathMath problems.
—
72.8
Benchmarks
5 sharedOnly Claude Mythos 5: 7Only GPT-5.6 Terra: 104
Claude Mythos 5
GPT-5.6 Terra