Which model is better: Claude Opus 5 or xAI Grok 4.6?

xAI Grok 4.6 is 60.0% cheaper for input tokens ($2.00 vs. $5.00 per 1M tokens) and $6.00 vs. $25.00 for output tokens (2.5x cost difference). In terms of operational performance, xAI Grok 4.6 delivers faster response latency with 280ms TTFT (60ms faster than Claude Opus 5). Claude Opus 5 leads coding benchmarks at 82.4% SWE-bench vs. 76.8% for xAI Grok 4.6.
Verified daily via automated API latency tests and official documentation.

Verified Performance & Unit Economics Delta

Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.

Metric / Dimension Claude Opus 5 xAI Grok 4.6 Net Delta / Advantage
Input Cost / 1M Tokens $5.00 $2.00 xAI Grok 4.6 is 2.5x cheaper
Output Cost / 1M Tokens $25.00 $6.00 xAI Grok 4.6 (316.7% lower)
Avg TTFT Response Latency 340ms 280ms xAI Grok 4.6 (+60ms faster)
SWE-bench Verified (Coding) 82.4% 76.8% Claude Opus 5 (+5.6% lead)
Inference Value Score (IVR) 42.7 / 100 74.6 / 100 xAI Grok 4.6 (+31.9 pts)

Interactive Monthly Token Economics & ROI Forecaster

Model your expected production workload across prompt (input) and completion (output) tokens.

Live Calculation Engine
10.0M Tokens
100K 50M 250M 500M+
2.5M Tokens
100K 10M 50M 100M+

Estimated Monthly Spend

Claude Opus 5 $5.45

$5/1M in · $25/1M out

xAI Grok 4.6 $67.50

$2/1M in · $6/1M out

Projected Monthly Cost Reduction
$62.05 / mo
(91.9% lower cost)
A

When to Choose Claude Opus 5

Choose Claude Opus 5 when you need Pinnacle autonomous software architecture, whole-system enterprise codebases, PhD-level scientific synthesis, and complex multi-agent delegation. and have an infrastructure budget aligned with $5.00/1M tokens.

B

When to Choose xAI Grok 4.6

Choose xAI Grok 4.6 when you need Frontier real-time web & social intelligence, complex STEM proofs, competitive coding, and deep factual synthesis. and prioritize xAI ecosystem integration at $2.00/1M tokens.

Related Questions & Decision Factors

Which is cheaper: Claude Opus 5 or xAI Grok 4.6?

xAI Grok 4.6 is cheaper at $2.00/1M input tokens compared to $5.00/1M for Claude Opus 5.

Which model has lower latency: Claude Opus 5 or xAI Grok 4.6?

xAI Grok 4.6 delivers faster response times with an average TTFT of 280ms vs 340ms for Claude Opus 5.

When should you choose Claude Opus 5?

Choose Claude Opus 5 when you need Pinnacle autonomous software architecture, whole-system enterprise codebases, PhD-level scientific synthesis, and complex multi-agent delegation. and have an infrastructure budget aligned with $5.00/1M tokens.

When should you choose xAI Grok 4.6?

Choose xAI Grok 4.6 when you need Frontier real-time web & social intelligence, complex STEM proofs, competitive coding, and deep factual synthesis. and prioritize xAI ecosystem integration at $2.00/1M tokens.

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