# Grok 4.20

> Source: Benchize (https://benchize.com) — https://benchize.com/models/grok-4-20. When citing or reusing this content, credit "Benchize" and link to https://benchize.com/models/grok-4-20.

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Canonical URL: https://benchize.com/models/grok-4-20
Last updated: Thu, 22 Oct 2026 06:20:09 GMT

Reproduction and quotation must name Benchize, link to the canonical HTML URL, and retain individual source citations.

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## Benchmarks

| Benchmark | Score | Rank | Cost | Source |  |
| --- | --- | --- | --- | --- | --- |
| [Long-Horizon Terminal-Bench](https://benchize.com/benchmarks/lhtb%3Aoverall.md) | 10.2% | 19 / 19 | $20.63 | [lhtb](https://zli12321.github.io/LHTB/script.js) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `mean_reward` \| 0.102 \| score_fraction \| reported \| Higher is better \| \| `solved_count` \| 0 \| tasks \| reward_gte_0_95 \| Higher is better \| \| `cost_per_task` \| 20.63 \| USD \| per_task \| Lower is better \| ### Configuration harness official_common_harness Reasoning effort unknown reportOrigin paper ### Reported statistics sampleSize 46 sourceThresholdCounts Not reported ### Source [Original source](https://zli12321.github.io/LHTB/script.js) Source lhtb Original model label Grok 4.20 Observed 2026-10-22T05:00:05.057Z Evidence SHA-256 `8b9c27664cc6298fa234c607ca27c953ec91b2eb9d116b8530cfaaa6722fa39e` Source locator `/rows/20` |  |  |  |  |  |
| [Vending-Bench 2](https://benchize.com/benchmarks/vendingbench%3Av2.md) | — | — | $4,662.85 | [vendingbench](https://andonlabs.com/_app/immutable/chunks/Cjn0_qj9.js) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `final_balance` \| 4662.846666666667 \| USD \| one_simulated_year \| Higher is better \| \| `geometric_mean_balance` \| 3775.660144377659 \| USD \| positive_final_balances \| Higher is better \| ### Configuration Reasoning effort unknown Model configuration Grok 4.20 thinkingEnabled Not reported ### Reported statistics confidenceHalfWidth95 2501.609446101063 positiveBalanceRuns 6 runCount 6 standardDeviation 3126.360550343909 standardError 1276.3313500515628 ### Source [Original source](https://andonlabs.com/_app/immutable/chunks/Cjn0_qj9.js) Source vendingbench Original model label Grok 4.20 Observed 2026-10-21T16:36:40.592Z Evidence SHA-256 `1a0b043147050298c405bcb743d73e425d532464202231cd18c27f836fa5f223` Source locator `/rows/48` |  |  |  |  |  |
| [NC Bench](https://benchize.com/benchmarks/nc-bench%3Aoverall.md) | 81.21% | 122 / 144 | — | [nc bench](https://www.nc-bench.com/models) |  |
| ### Original source values \| Metric \| Value \| Unit \| Scope \| Direction \| \| --- \| --- \| --- \| --- \| --- \| \| `score` \| 81.21 \| percent \| reported \| Higher is better \| \| `tooling` \| 95 \| percent \| category \| Higher is better \| \| `creative_writing` \| 83.44 \| percent \| category \| Higher is better \| \| `language` \| 78.86 \| percent \| category \| Higher is better \| \| `utility` \| 84.11 \| percent \| category \| Higher is better \| \| `reasoning` \| 72.46 \| percent \| category \| Higher is better \| \| `text_editing` \| 95.63 \| percent \| category \| Higher is better \| \| `rule_following` \| 59.71 \| percent \| category \| Higher is better \| \| `hallucination` \| 80.48 \| percent \| category \| Higher is better \| ### Configuration Reasoning effort unknown Model configuration Grok 4.20 thinkingEnabled Not reported ### Source [Original source](https://www.nc-bench.com/models) Source nc bench Original model label Grok 4.20 Observed 2026-10-22T06:10:03.426Z Evidence SHA-256 `ec261022458543624b08a136d01f5a2f0666cd52ffb49c64d6ca983e8543d1b5` Source locator `/rows/160` |  |  |  |  |  |

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Cite as: Grok 4.20 — Benchize, https://benchize.com/models/grok-4-20 (retrieved 2026-10-22)