Popular Comparisons:
⚡3-Second Selection Verdict
Daily & TestsPick Grok 4.1 Fast (Save 96% · $77.00/mo)

Monthly savings assume 10M input + 2M output tokens/month at our price snapshot. Change usage ↓

xAIVerified

Grok 4.1 Fast

★ Save 96% ★ Massive Context 2M
Input$0.20 / 1M
Output$0.50 / 1M
Context2M
CursorBench Pass Rate—
AnthropicVerified

Claude Opus 5.5

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)

Grok 4.1 Fast$3.00
Claude Opus 5.5$80.00

Context capacity · tokens (not recall accuracy)

Grok 4.1 Fast2,000,000
Claude Opus 5.51,000,000

CursorBench 4.0 · %

Grok 4.1 FastNo verified data
Claude Opus 5.557.8%

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

CursorBench · 2026-11-14 ↗
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 4.1 Fast vs Claude Opus 5.5
Slot 1xAI
Slot 2Anthropic
Slot 3
Grok 4.1 Fast 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 4.1 Fast
$3.00/ mo
(in: $2.00 + out: $1.00)
Claude Opus 5.5
$80.00/ mo
(in: $40.00 + out: $40.00)
AttributeGrok 4.1 FastxAIClaude Opus 5.5Anthropic
Input$0.20$4.00
Output$0.50$20.00
Context2M1M
CursorBench Pass Rate—57.8%
StatusVerifiedVerified
Tags & CapabilitiesNew, Fast, Low cost, Coding, Agentic, Long contextNew, Flagship, Reasoning, Coding, Agentic, Adaptive thinking, SOTA
LMArena Code#68#2
LMArena Agent—#2
CursorBench—#3
GDPx (SemiAnalysis)—#2
Artificial Analysis—#3
Vals AI—#4
LiveBench—#5
LMArena Text#28#4
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