Popular Comparisons:
⚡3-Second Selection Verdict
Daily & TestsPick Grok 4.5 (Save 60%)
xAIVerified

Grok 4.5

★ Save 60%
Input$2.00 / 1M
Output$6.00 / 1M
Context500K
CursorBench Pass Rate—
AnthropicVerified

Claude Opus 5.5

★ Massive Context 1M
Input$4.00 / 1M
Output$20.00 / 1M
Context1M
CursorBench Pass Rate—

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)

Grok 4.5$32.00
Claude Opus 5.5$80.00

Context capacity · tokens (not recall accuracy)

Grok 4.5500,000
Claude Opus 5.51,000,000

CursorBench 4.0 · %

Grok 4.5No verified data
Claude Opus 5.5No verified data

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

CursorBench · 2026-10-07 ↗
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 ModelGrok 4.5 vs Claude Opus 5.5
Slot 1xAI
Slot 2Anthropic
Slot 3
Grok 4.5 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
Grok 4.5
$32.00/ mo
(in: $2 + out: $6)
Claude Opus 5.5
$80.00/ mo
(in: $4 + out: $20)
AttributeGrok 4.5xAIClaude Opus 5.5Anthropic
Input$2.00$4.00
Output$6.00$20.00
Context500K1M
CursorBench Pass Rate——
StatusVerifiedVerified
Tags & CapabilitiesFlagship, Reasoning, Coding, AgenticNew, Flagship, Reasoning, Coding, Agentic, Adaptive thinking, SOTA
LMArena Code#27#1
LMArena Agent#25#1
CursorBench#—#1
Artificial Analysis#26#1
Vals AI#32#3
LiveBench#27#2
LMArena Text#30#2
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