Model comparison
Claude 4.1 Opus Thinking vs Grok Code Fast 1
Head-to-head evidence from 8 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude 4.1 Opus Thinking #184 (Supported); Grok Code Fast 1 #180 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude 4.1 Opus Thinking and Grok Code Fast 1 share 8 comparable benchmark results. 0 of 8 categories are comparable. 1 result is unique to Claude 4.1 Opus Thinking; 4 to Grok Code Fast 1.
Updated July 20, 2026- Shared results
- 8
- Claude 4.1 Opus Thinking only
- 1
- Grok Code Fast 1 only
- 4
- Comparable categories
- 0 / 8
Benchmark data for Claude 4.1 Opus Thinking and Grok Code Fast 1 is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 8 shared benchmark results across 5 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
Grok Code Fast 1 has the larger context window at 256K, compared with 200K for Claude 4.1 Opus Thinking.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Claude 4.1 Opus Thinking | Δ | Grok Code Fast 1 |
|---|---|---|---|
| Coding | Claude 4.1 Opus ThinkingNot measured | MarginNo overlap | Grok Code Fast 170.8 |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude 4.1 Opus Thinking | Grok Code Fast 1 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude 4.1 Opus ThinkingNot available | Grok Code Fast 1$0.2 input / $1.5 output | A complete price comparison is not available. |
| Generation speedtokens per second | Claude 4.1 Opus Thinking29 tok/s | Grok Code Fast 1172 tok/s | Grok Code Fast 1 has the higher measured throughput. |
| First-answer latencyseconds to first token | Claude 4.1 Opus Thinking15.00 s | Grok Code Fast 12.81 s | Grok Code Fast 1 reaches the first token sooner. |
| Context windowmaximum listed tokens | Claude 4.1 Opus Thinking200K | Grok Code Fast 1256K | Grok Code Fast 1 lists the larger context window. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | Claude 4.1 Opus Thinking | Grok Code Fast 1 | Result |
|---|---|---|---|
| τ²-bench resultsSource | 71.4% | 75.7% | Grok Code Fast 1 leads |
Coding2 benchmarks
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | Claude 4.1 Opus Thinking | Grok Code Fast 1 | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 33.7% | 21.6% | Claude 4.1 Opus Thinking leads |
| AA-GPQA DiamondSource | 80.9% | 72.7% | Claude 4.1 Opus Thinking leads |
| AA-HLESource | 11.9% | 7.5% | Claude 4.1 Opus Thinking leads |
| AA-Omniscience IndexSource | — | -36.0% | Not comparable |
| AA-Omniscience AccuracySource | — | 23.8% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 78.5% | Not comparable |
Multimodal1 benchmarks
| Benchmark | Claude 4.1 Opus Thinking | Grok Code Fast 1 | Result |
|---|---|---|---|
| AA-MMMU-ProSource | 67.9% | — | Not comparable |
Inst. Following1 benchmarks
| Benchmark | Claude 4.1 Opus Thinking | Grok Code Fast 1 | Result |
|---|---|---|---|
| AA-IFBenchSource | 55.4% | 41.4% | Claude 4.1 Opus Thinking leads |
Frequently Asked Questions (3)
Can I compare Claude 4.1 Opus Thinking and Grok Code Fast 1 on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for Claude 4.1 Opus Thinking and Grok Code Fast 1 today?
Claude 4.1 Opus Thinking: Pricing unavailable Grok Code Fast 1: $0.20 input / $1.50 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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