Model comparison
Grok Code Fast 1 vs Inkling
Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: Grok Code Fast 1 unranked; Inkling #17
BenchAlign evidence: Grok Code Fast 1 supported; Inkling not scored. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Grok Code Fast 1 and Inkling share 1 comparable benchmark result. 1 of 8 categories are comparable. 12 results are unique to Grok Code Fast 1; 15 to Inkling.
Updated July 15, 2026- Shared results
- 1
- Grok Code Fast 1 only
- 12
- Inkling only
- 15
- Comparable categories
- 1 / 8
Pick Inkling if you want the stronger benchmark profile. Grok Code Fast 1 only becomes the better choice if coding is the priority or you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 1 shared benchmark result across 1 evidence category; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Inkling is clearly ahead on the provisional aggregate, 69 to 41. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Inkling is also the more expensive model on tokens at $1.87 input / $4.68 output per 1M tokens, versus $0.20 input / $1.50 output per 1M tokens for Grok Code Fast 1. That is roughly 3.1x on output cost alone. Inkling is the reasoning model in the pair, while Grok Code Fast 1 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Inkling gives you the larger context window at 1M, compared with 256K for Grok Code Fast 1.
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 | Grok Code Fast 1 | Δ | Inkling |
|---|---|---|---|
| Coding | Grok Code Fast 170.8 | Margin← 2.2 | Inkling68.6 |
| Agentic | Grok Code Fast 1Not measured | MarginNo overlap | Inkling69.4 |
| Knowledge | Grok Code Fast 1Not measured | MarginNo overlap | Inkling51.7 |
| Math | Grok Code Fast 1Not measured | MarginNo overlap | Inkling97.1 |
| Multimodal | Grok Code Fast 1Not measured | MarginNo overlap | Inkling76.5 |
| Inst. Following | Grok Code Fast 1Not measured | MarginNo overlap | Inkling79.8 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
SWE-bench Verified
CodingA 70.8%B 77.6%Winner: InklingΔ 6.8SWE-bench Verified: Grok Code Fast 1 scored 70.8%; Inkling scored 77.6%. Inkling wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Grok Code Fast 1 | Inkling | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Grok Code Fast 1$0.2 input / $1.5 output | Inkling$1.87 input / $4.68 output | Grok Code Fast 1 has the lower combined listed price. |
| Generation speedtokens per second | Grok Code Fast 1172 tok/s | InklingNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Grok Code Fast 12.81 s | InklingNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Grok Code Fast 1256K | Inkling1M | Inkling lists the larger context window. |
Benchmark Deep Dive
Agentic5 benchmarks
CodingGrok Code Fast 1 wins5 benchmarks
Reasoning2 benchmarks
Knowledge10 benchmarks
| Benchmark | Grok Code Fast 1 | Inkling | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 21.6% | — | Not comparable |
| AA-GPQA DiamondSource | 72.7% | — | Not comparable |
| AA-HLESource | 7.5% | — | Not comparable |
| AA-Omniscience IndexSource | -36.0% | — | Not comparable |
| AA-Omniscience AccuracySource | 23.8% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 78.5% | — | Not comparable |
| GPQASource | — | 87.9% | Not comparable |
| GPQA-DSource | — | 87.9% | Not comparable |
| HLESource | — | 46% | Not comparable |
| HLE w/o toolsSource | — | 30% | Not comparable |
Math1 benchmarks
| Benchmark | Grok Code Fast 1 | Inkling | Result |
|---|---|---|---|
| AIME26Source | — | 97.1% | Not comparable |
Multimodal3 benchmarks
Frequently Asked Questions (2)
Which is better, Grok Code Fast 1 or Inkling?
Inkling is ahead on BenchLM's provisional leaderboard, 69 to 41. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 70.8% and 77.6%.
Which is better for coding, Grok Code Fast 1 or Inkling?
Grok Code Fast 1 has the edge for coding in this comparison, averaging 70.8 versus 68.6. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
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