Popular Comparisons:
⚡3-Second Selection Verdict
Daily & TestsPick Claude Opus 5.5 (Save 60%)
AnthropicVerified

Claude Mythos 5

Input$10.00 / 1M
Output$50.00 / 1M
Context1M
CursorBench Pass Rate—
AnthropicVerified

Claude Opus 5.5

★ Save 60%
Input$4.00 / 1M
Output$20.00 / 1M
Context1M
CursorBench Pass Rate57.8%

Pick your workflow, then your budget

Estimates use our price snapshot, excluding cache, retries, taxes and tools. Check availability for preview and legacy models.

Workload cost · USD (lower costs less)

Claude Mythos 5$200.00
Claude Opus 5.5$80.00

Context capacity · tokens (not recall accuracy)

Claude Mythos 51,000,000
Claude Opus 5.51,000,000

CursorBench 4.0 · %

Claude Mythos 5No verified data
Claude Opus 5.557.8%

Tool reliability, long-context recall and same-harness SWE-bench: untested, not zero.

CursorBench · 2026-09-22 ↗
Patch review example: why does an empty array slip through?

Editorial example, not measured model output. Review boundary contracts and regression tests; this is not a model ranking.

export function mean(values: number[]) {
  return values.reduce((a, b) => a + b, 0)
    / values.length;
}

// mean([]) => NaN
// Missing an explicit empty-input contract
⚙️ Select ModelClaude Mythos 5 vs Claude Opus 5.5
Slot 1Anthropic
Slot 2Anthropic
Slot 3
Claude Mythos 5 VS Claude Opus 5.5
💳 View Plans↗

💰 Monthly Cost Simulation

Simulate monthly cost differences based on your estimated token usage volume

Monthly Input Tokens (Prompt)10 M tokens
Monthly Output Tokens (Completion)2 M tokens
Claude Mythos 5
$200.00/ mo
(in: $10 + out: $50)
Claude Opus 5.5
$80.00/ mo
(in: $4 + out: $20)
AttributeClaude Mythos 5AnthropicClaude Opus 5.5Anthropic
Input$10.00$4.00
Output$50.00$20.00
Context1M1M
CursorBench Pass Rate—57.8%
StatusVerifiedVerified
Tags & CapabilitiesFlagship, Reasoning, Vision, Adaptive thinking, LimitedNew, Flagship, Reasoning, Coding, Agentic, Adaptive thinking, SOTA
LMArena Code#—#1
LMArena Agent#—#1
CursorBench#—#1
Artificial Analysis#—#1
Vals AI#—#3
LiveBench#—#2
LMArena Text#—#2
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