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BenchLM

Gemini 3.1 Pro vs Grok 4.6

Updated September 25, 2026. Rank says Grok 4.6 is ahead. Price, access, and your workload can each overturn that. Public scores include evidence status and uncertainty.

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Decision reading

Grok 4.6 has the higher public score estimate, 69.19 versus 64.45, but the 90% score intervals overlap. Treat that as a lead, not a settled winner. 7 results are shared. Category rows resting on Estimated evidence or different benchmark sets are marked directional and do not name a winner.

Model A
Google logo

Google

64.45/100

Estimated · Public rank #30

90% interval 58.3–70.6

Model B
xAI logo

xAI

69.19/100

Supported · Public rank #15

90% interval 66.3–72.1

Shared results
7
Gemini 3.1 Pro only
21
Grok 4.6 only
10
Like-for-like categories
3 / 8
Estimated: Gemini 3.1 Pro · Supported: Grok 4.6How the comparison works

Which one for your work

Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.

  • Coding work

    Code generation, repair, and software-engineering tasks

    Grok 4.6

    Grok 4.6 leads on the public coding lane, 62 to 43.3, with Supported evidence for both models and non-overlapping 90% intervals.

    Confidence: stronger
  • Agentic work

    Tool use, computer use, and multi-step task completion

    Grok 4.6

    Grok 4.6 leads on the public agentic lane, 67.9 to 39.3, with Supported evidence for both models and non-overlapping 90% intervals.

    Confidence: stronger
  • Long documents

    Prompts that approach the documented context limit

    Gemini 3.1 Pro

    Gemini 3.1 Pro has the larger documented context window.

    Confidence: documented
Show secondary and unsupported calls
  • Chat turn cost

    1K fresh input + 500 output tokens

    Grok 4.6

    Grok 4.6 has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates
  • Repository review cost

    50K fresh input + 3K output tokens

    Grok 4.6

    Grok 4.6 has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates
  • Cache-heavy agent loop cost

    200K cached + 20K fresh input + 10K output tokens

    No clear pick

    A complete comparable API-rate estimate is not available for both models.

    Confidence: listed-rates

Which one for a specific job

Choose a job from the LLM Selector's task catalog to see the category row it rests on, under the same basis rules as the table below. A directional row stays directional; choosing a job never creates a winner.

The same task catalog as the LLM Selector. Each job names the evidence surface it rests on; nothing here adds a new score.

43.3Gemini 3.1 Pro62.0Grok 4.6

Like-for-like · BenchAlign v5.7

Grok 4.6 leads the like-for-like coding row.

Coding scores combine specific tasks and setups. Match the editor, harness, and effort to your workflow.

Same basis rules as the category table below

What is actually comparable

Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.

Shape of the matched evidence

Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.

Too few matched category axes support a radar. The ruled list below shows only shared benchmark results; positions use each benchmark’s normalized display scale when available.

Bars run 0–100 on each benchmark’s normalized display scale

Category results, on a stated basis

Each row shows the public-lane category score for both models: the BenchAlign v5.7 lane for agentic, coding, and knowledge, and the weighted public rows elsewhere, with the same rank each model page reports. A row is like-for-like only when both scores rest on Supported evidence or the same weighted set. Directional and not-comparable rows remain visible, but they never receive a winner.

Agentic

Like-for-like
Gemini 3.1 Pro
39.3
Supported · #47/105
Grok 4.6
67.9
Supported · #8/105
Basis
BenchAlign v5.7 lane · 6 vs 4 public rows
Reading
Grok 4.6 leads

Coding

Like-for-like
Gemini 3.1 Pro
43.3
Supported · #52/135
Grok 4.6
62.0
Supported · #14/135
Basis
BenchAlign v5.7 lane · 5 vs 8 public rows
Reading
Grok 4.6 leads

Knowledge

Like-for-like
Gemini 3.1 Pro
66.7
Supported · #18/158
Grok 4.6
69.0
Supported · #13/158
Basis
BenchAlign v5.7 lane · 6 vs 2 public rows
Reading
Grok 4.6 leads · intervals overlap

Reasoning

Not comparable
Gemini 3.1 Pro
54.4
Unranked · 2 rankable rows
Grok 4.6
57.6
#16/19
Basis
Provisional lane · 2 vs 2 weighted rows
Reading
Not comparable

Multimodal

Not comparable
Gemini 3.1 Pro
79.1
#13/50
Grok 4.6
Not ranked
Basis
Provisional lane · 2 vs 0 weighted rows
Reading
Not comparable

Multilingual

Not comparable
Gemini 3.1 Pro
Not ranked
Grok 4.6
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Instruction following

Not comparable
Gemini 3.1 Pro
Not ranked
Grok 4.6
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Math

Not comparable
Gemini 3.1 Pro
54.2
Unranked · 2 rankable rows
Grok 4.6
Not ranked
Basis
Provisional lane · 2 vs 0 weighted rows
Reading
Not comparable

Ranks count the models scored in each category’s lane, so the agentic, coding, and knowledge denominators (BenchAlign v5.7) differ from the provisional-lane categories. Unranked scores sit on the provisional lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.

Supported evidence per lane · bars run 0–100Methodology

What each workload costs

Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.

Chat turn

1K fresh input + 500 output tokens

Gemini 3.1 Pro
$0.008
Fits in one request
Grok 4.6
$0.005
Fits in one request

Grok 4.6 has the lower modeled cost

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

Gemini 3.1 Pro
$0.136
Fits in one request
Grok 4.6
$0.118
Fits in one request

Grok 4.6 has the lower modeled cost

Costs use the listed standard API rates.

Cache-heavy agent loop

200K cached + 20K fresh input + 10K output tokens

Gemini 3.1 Pro
$0.2
Fits in one request
Grok 4.6
$0.2
Fits in one request

Modeled costs are equal

Costs use the listed standard API rates.

Cached input falls back to the list input rate only where a cached rate is unpublished

Specification differences

Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.

Reasoning profile

Gemini 3.1 Pro

Reasoning

Grok 4.6

Reasoning

Weight access

Gemini 3.1 Pro

Proprietary

Grok 4.6

Proprietary

License

Gemini 3.1 Pro

Proprietary

Grok 4.6

Proprietary

Release date

Gemini 3.1 Pro

2026-02-19

Grok 4.6

2026-08-12

If you already use one of these models

Deployment change
The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
Quality signal
Grok 4.6 has the higher public score estimate, 69.19 versus 64.45, but the 90% score intervals overlap.
Workload cost
Repository review: $0.136 vs $0.118. Cache-heavy agent loop: $0.2 vs $0.2.
Context tradeoff
Gemini 3.1 Pro has the larger documented window (1M).
Run the same representative tasks against both endpoints before changing production traffic.

Questions

Which is better, Gemini 3.1 Pro or Grok 4.6?

Grok 4.6 has the higher public score estimate, 69.19 versus 64.45, but the 90% score intervals overlap. The higher estimate is not a decisive winner because the uncertainty ranges overlap.

Which is better for coding, Gemini 3.1 Pro or Grok 4.6?

Grok 4.6 leads the public coding lane, 62 to 43.3, with Supported evidence for both models and non-overlapping 90% intervals.

Which is better for agentic tasks, Gemini 3.1 Pro or Grok 4.6?

Grok 4.6 leads the public agentic tasks lane, 67.9 to 39.3, with Supported evidence for both models and non-overlapping 90% intervals.

Which costs less, Gemini 3.1 Pro or Grok 4.6?

For the stated presets, chat costs $0.008 on Gemini 3.1 Pro and $0.005 on Grok 4.6; repository review costs $0.136 and $0.118; the cache-heavy agent loop costs $0.2 and $0.2. Costs use the listed standard API rates.

Which has the larger context window, Gemini 3.1 Pro or Grok 4.6?

Gemini 3.1 Pro has the larger documented context window: 1M, compared with 500K.

Benchmark evidence

The full public result ledger is available for audit without forcing a wide desktop table onto a phone.

Browse raw public benchmark evidence38 rows

Agentic

  • Claw-Eval

    Gemini 3.1 Pro57.8%
    Source
    Grok 4.6—

    Not directly comparable

  • DeepSearchQA

    Gemini 3.1 Pro69.7%
    Source
    Grok 4.6—

    Not directly comparable

  • τ²-bench results

    Gemini 3.1 Pro95.6%
    Source
    Grok 4.6—

    Not directly comparable

  • Gert Labs

    Gemini 3.1 Pro56.87%
    Source
    Grok 4.6—

    Not directly comparable

  • ResearchClawBench

    Gemini 3.1 Pro13.3%
    Source
    Grok 4.6—

    Not directly comparable

  • Terminal-Bench 2.1 (Vals)

    Gemini 3.1 Pro70.8%
    Source
    Grok 4.678.3%
    Source

    Grok 4.6 leads this result

  • Terminal-Bench 3.0

    Gemini 3.1 Pro—
    Grok 4.626.5%
    Source

    Not directly comparable

  • APEX-Agents

    Gemini 3.1 Pro—
    Grok 4.657.5%
    Source

    Not directly comparable

  • ApprenticeBench

    Gemini 3.1 Pro—
    Grok 4.613%
    Source

    Not directly comparable

Coding

  • LiveCodeBench Pro

    Gemini 3.1 Pro82.9%
    Source
    Grok 4.6—

    Not directly comparable

  • React Native Evals

    Gemini 3.1 Pro78.9%
    Source
    Grok 4.6—

    Not directly comparable

  • Vibe Code Bench

    Gemini 3.1 Pro32.03%
    Source
    Grok 4.6—

    Not directly comparable

  • LiveCodeBench (Vals)

    Gemini 3.1 Pro88.5%
    Source
    Grok 4.688.2%
    Source

    Gemini 3.1 Pro leads this result

  • SWE-bench (Vals)

    Gemini 3.1 Pro78.8%
    Source
    Grok 4.695.6%
    Source

    Grok 4.6 leads this result

  • Bug Hunt Bench

    Gemini 3.1 Pro—
    Grok 4.627 fixes
    Source

    Not directly comparable

  • DeepSWE

    Gemini 3.1 Pro—
    Grok 4.665.9%
    Source

    Not directly comparable

  • cursorBench32

    Gemini 3.1 Pro—
    Grok 4.670.8%
    Source

    Not directly comparable

  • FrontierCode 1.1 Extended

    Gemini 3.1 Pro—
    Grok 4.661.3%
    Source

    Not directly comparable

  • VulcanBench v3

    Gemini 3.1 Pro—
    Grok 4.687.0%
    Source

    Not directly comparable

  • FrontierSWE v2

    Gemini 3.1 Pro—
    Grok 4.625.3%
    Source

    Not directly comparable

Reasoning

  • ARC-AGI-2

    Gemini 3.1 Pro77.1%
    Source
    Grok 4.667.1%
    Source

    Gemini 3.1 Pro leads this result

  • ARC-AGI-3

    Gemini 3.1 Pro0.4%
    Source
    Grok 4.62.1%
    Source

    Grok 4.6 leads this result

  • ARC-AGI-1

    Gemini 3.1 Pro—
    Grok 4.687.00%
    Source

    Not directly comparable

Multimodal

  • MMMU-Pro

    Gemini 3.1 Pro83.9%
    Source
    Grok 4.6—

    Not directly comparable

  • CharXiv

    Gemini 3.1 Pro80.2%
    Source
    Grok 4.6—

    Not directly comparable

  • ERQA

    Gemini 3.1 Pro69.4%
    Source
    Grok 4.6—

    Not directly comparable

  • SimpleVQA

    Gemini 3.1 Pro72.4%
    Source
    Grok 4.6—

    Not directly comparable

  • ScreenSpot Pro

    Gemini 3.1 Pro84.4%
    Source
    Grok 4.6—

    Not directly comparable

  • ZeroBench

    Gemini 3.1 Pro29.0%
    Source
    Grok 4.6—

    Not directly comparable

  • MedXpertQA (MM)

    Gemini 3.1 Pro81.3%
    Source
    Grok 4.6—

    Not directly comparable

Knowledge

  • GPQA-D

    Gemini 3.1 Pro94.3%
    Source
    Grok 4.6—

    Not directly comparable

  • HLE w/o tools

    Gemini 3.1 Pro45.4%
    Source
    Grok 4.6—

    Not directly comparable

  • HealthBench Hard

    Gemini 3.1 Pro20.6%
    Source
    Grok 4.6—

    Not directly comparable

  • MedXpertQA (Text)

    Gemini 3.1 Pro71.5%
    Source
    Grok 4.6—

    Not directly comparable

  • GPQA Diamond (Vals)

    Gemini 3.1 Pro95.5%
    Source
    Grok 4.694.7%
    Source

    Gemini 3.1 Pro leads this result

  • MMLU-Pro (Vals)

    Gemini 3.1 Pro91.0%
    Source
    Grok 4.689.4%
    Source

    Gemini 3.1 Pro leads this result

Math

  • FrontierMath v2 (Tiers 1-3)

    Gemini 3.1 Pro36.900%
    Source
    Grok 4.6—

    Not directly comparable

  • FrontierMath v2 (Tier 4)

    Gemini 3.1 Pro16.700%
    Source
    Grok 4.6—

    Not directly comparable

38 public results · 7 shared

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Last updated September 25, 2026