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BenchLM

Gemma 4 26B A4B vs GPT-5.6 Sol

Updated September 24, 2026. Rank says GPT-5.6 Sol is ahead. Price, access, and your workload can each overturn that. Public scores include evidence status and uncertainty.

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Decision reading

GPT-5.6 Sol has the higher public score, 78.49 versus 46.28, and the 90% score intervals do not overlap. 1 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

46.28/100

Supported · Public rank #90

90% interval 31.9–60.7

Model B
OpenAI logo

OpenAI

78.49/100

Supported · Public rank #7

90% interval 75.6–81.4

Shared results
1
Gemma 4 26B A4B only
3
GPT-5.6 Sol only
36
Like-for-like categories
3 / 8
Supported: Gemma 4 26B A4B and GPT-5.6 SolHow 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

    GPT-5.6 Sol

    GPT-5.6 Sol leads on the public coding lane, 71.6 to 34.3, with Supported evidence for both models and non-overlapping 90% intervals.

    Confidence: stronger
  • Long documents

    Prompts that approach the documented context limit

    GPT-5.6 Sol

    GPT-5.6 Sol has the larger documented context window.

    Confidence: documented
Show secondary and unsupported calls
  • Agentic work

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

    Not enough matched evidence

    Gemma 4 26B A4B is not ranked on the public lane for agentic, so no winner is named for agentic.

    Confidence: limited
  • Chat turn cost

    1K fresh input + 500 output tokens

    Not enough matched evidence

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

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

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

    Not enough matched evidence

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

    Confidence: listed-rates
  • Repository review cost

    50K fresh input + 3K output tokens

    Not enough matched evidence

    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.

34.3Gemma 4 26B A4B71.6GPT-5.6 Sol

Like-for-like · BenchAlign v5.7

GPT-5.6 Sol 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.

1 category rests on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.

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.

Coding

Like-for-like
Gemma 4 26B A4B
34.3
Supported · #77/135
GPT-5.6 Sol
71.6
Supported · #6/135
Basis
BenchAlign v5.7 lane · 0 vs 12 public rows
Reading
GPT-5.6 Sol leads

Multimodal

Like-for-like
Gemma 4 26B A4B
44.2
#43/50
GPT-5.6 Sol
87.6
#5/50
Basis
Provisional lane · 1 vs 1 weighted rows
Reading
GPT-5.6 Sol leads

Knowledge

Like-for-like
Gemma 4 26B A4B
36.4
Supported · #101/158
GPT-5.6 Sol
78.8
Supported · #7/158
Basis
BenchAlign v5.7 lane · 3 vs 8 public rows
Reading
GPT-5.6 Sol leads

Instruction following

Directional only
Gemma 4 26B A4B
87.3
#31/124
GPT-5.6 Sol
87.7
#28/124
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Directional only

Agentic

Not comparable
Gemma 4 26B A4B
Not ranked
GPT-5.6 Sol
69.6
Supported · #7/105
Basis
BenchAlign v5.7 lane · 0 vs 9 public rows
Reading
Not comparable

Reasoning

Not comparable
Gemma 4 26B A4B
67.2
Unranked · 2 rankable rows
GPT-5.6 Sol
72.1
#8/19
Basis
Provisional lane · 0 vs 2 weighted rows
Reading
Not comparable

Multilingual

Not comparable
Gemma 4 26B A4B
Not ranked
GPT-5.6 Sol
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Math

Not comparable
Gemma 4 26B A4B
Not ranked
GPT-5.6 Sol
96.8
Unranked · 3 rankable rows
Basis
Provisional lane · 0 vs 2 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

Gemma 4 26B A4B
Self-hosted; infrastructure cost varies
Fits in one request
GPT-5.6 Sol
$0.014
Fits in one request

Gemma 4 26B A4B has no comparable published API token rate.

Repository review

50K fresh input + 3K output tokens

Gemma 4 26B A4B
Self-hosted; infrastructure cost varies
Fits in one request
GPT-5.6 Sol
$0.26
Fits in one request

Gemma 4 26B A4B has no comparable published API token rate.

Cache-heavy agent loop

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

Gemma 4 26B A4B
Self-hosted; infrastructure cost varies
Fits in one request
Cached-input rate unavailable
GPT-5.6 Sol
$0.36
Fits in one request

Gemma 4 26B A4B has no comparable published API token rate.

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.

Cached-input rate

A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.

Gemma 4 26B A4B

No comparable hosted API rate

GPT-5.6 Sol

$0.4 per 1M cached input tokens

OpenAI pricing

Reasoning profile

Gemma 4 26B A4B

Reasoning

GPT-5.6 Sol

Reasoning

Weight access

Gemma 4 26B A4B

Open Weight

GPT-5.6 Sol

Proprietary

License

Gemma 4 26B A4B

Open Weight

GPT-5.6 Sol

Proprietary

Release date

Gemma 4 26B A4B

2026-04-02

GPT-5.6 Sol

2026-07-09

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
GPT-5.6 Sol has the higher public score, 78.49 versus 46.28, and the 90% score intervals do not overlap.
Workload cost
A complete comparable API-rate estimate is not available for both models.
Context tradeoff
GPT-5.6 Sol has the larger documented window (1.05M).
Run the same representative tasks against both endpoints before changing production traffic.

Questions

Which is better, Gemma 4 26B A4B or GPT-5.6 Sol?

GPT-5.6 Sol has the higher public score, 78.49 versus 46.28, and the 90% score intervals do not overlap. That is the clearest overall quality signal in the current public data.

Which is better for coding, Gemma 4 26B A4B or GPT-5.6 Sol?

GPT-5.6 Sol leads the public coding lane, 71.6 to 34.3, with Supported evidence for both models and non-overlapping 90% intervals.

Which is better for agentic tasks, Gemma 4 26B A4B or GPT-5.6 Sol?

Gemma 4 26B A4B is not ranked on the public lane for agentic tasks, so no winner is named for agentic tasks.

Which costs less, Gemma 4 26B A4B or GPT-5.6 Sol?

Both models do not have comparable published API token rates, so this page does not name a universal price winner.

Which has the larger context window, Gemma 4 26B A4B or GPT-5.6 Sol?

GPT-5.6 Sol has the larger documented context window: 1.05M, compared with 256K.

Benchmark evidence

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

Browse raw public benchmark evidence40 rows

Agentic

  • Terminal-Bench 3.0

    Gemma 4 26B A4B—
    GPT-5.6 Sol34.6%
    Source

    Not directly comparable

  • Terminal-Bench 2.1

    Gemma 4 26B A4B—
    GPT-5.6 Sol91.9%
    Source

    Not directly comparable

  • BrowseComp

    Gemma 4 26B A4B—
    GPT-5.6 Sol92.2%
    Source

    Not directly comparable

  • OSWorld 2.0

    Gemma 4 26B A4B—
    GPT-5.6 Sol62.6%
    Source

    Not directly comparable

  • CyberGym

    Gemma 4 26B A4B—
    GPT-5.6 Sol84.5%
    Source

    Not directly comparable

  • ExploitGym

    Gemma 4 26B A4B—
    GPT-5.6 Sol33.7%
    Source

    Not directly comparable

  • Toolathlon

    Gemma 4 26B A4B—
    GPT-5.6 Sol58%
    Source

    Not directly comparable

  • Terminal-Bench 2.1 (Vals)

    Gemma 4 26B A4B—
    GPT-5.6 Sol85.8%
    Source

    Not directly comparable

  • ApprenticeBench

    Gemma 4 26B A4B—
    GPT-5.6 Sol26%
    Source

    Not directly comparable

Coding

  • Bug Hunt Bench

    Gemma 4 26B A4B—
    GPT-5.6 Sol42 fixes
    Source

    Not directly comparable

  • SWE-bench Pro

    Gemma 4 26B A4B—
    GPT-5.6 Sol64.6%
    Source

    Not directly comparable

  • Terminal-Bench 2.1

    Gemma 4 26B A4B—
    GPT-5.6 Sol91.9%
    Source

    Not directly comparable

  • DeepSWE

    Gemma 4 26B A4B—
    GPT-5.6 Sol72.7%
    Source

    Not directly comparable

  • FrontierCode 1.1 Extended

    Gemma 4 26B A4B—
    GPT-5.6 Sol60.6%
    Source

    Not directly comparable

  • FrontierSWE v2

    Gemma 4 26B A4B—
    GPT-5.6 Sol32.2%
    Source

    Not directly comparable

  • cursorBench32

    Gemma 4 26B A4B—
    GPT-5.6 Sol67.2%
    Source

    Not directly comparable

  • VulcanBench v3

    Gemma 4 26B A4B—
    GPT-5.6 Sol87.0%
    Source

    Not directly comparable

  • VulcanBench CII v1

    Gemma 4 26B A4B—
    GPT-5.6 Sol86.5%
    Source

    Not directly comparable

  • LiveCodeBench (Vals)

    Gemma 4 26B A4B—
    GPT-5.6 Sol82.6%
    Source

    Not directly comparable

  • SWE-bench (Vals)

    Gemma 4 26B A4B—
    GPT-5.6 Sol96.2%
    Source

    Not directly comparable

  • cursorBench40

    Gemma 4 26B A4B—
    GPT-5.6 Sol41.7%
    Source

    Not directly comparable

Reasoning

  • ARC-AGI-2

    Gemma 4 26B A4B—
    GPT-5.6 Sol92.5%
    Source

    Not directly comparable

  • ARC-AGI-3

    Gemma 4 26B A4B—
    GPT-5.6 Sol7.8%
    Source

    Not directly comparable

  • GeneBench-Pro

    Gemma 4 26B A4B—
    GPT-5.6 Sol28.7%
    Source

    Not directly comparable

Multimodal

  • MMMU-Pro

    Gemma 4 26B A4B73.8%
    Source
    GPT-5.6 Sol83%
    Source

    GPT-5.6 Sol leads this result

  • MMMU-Pro w/ Python

    Gemma 4 26B A4B—
    GPT-5.6 Sol84.6%
    Source

    Not directly comparable

Knowledge

  • MMLU-Pro

    Gemma 4 26B A4B82.6%
    Source
    GPT-5.6 Sol—

    Not directly comparable

  • HLE

    Gemma 4 26B A4B17.2%
    Source
    GPT-5.6 Sol—

    Not directly comparable

  • HLE w/o tools

    Gemma 4 26B A4B8.7%
    Source
    GPT-5.6 Sol—

    Not directly comparable

  • GPQA

    Gemma 4 26B A4B—
    GPT-5.6 Sol94.6%
    Source

    Not directly comparable

  • GPQA-D

    Gemma 4 26B A4B—
    GPT-5.6 Sol94.6%
    Source

    Not directly comparable

  • HLE-Verified

    Gemma 4 26B A4B—
    GPT-5.6 Sol54.5%
    Source

    Not directly comparable

  • LABBench2

    Gemma 4 26B A4B—
    GPT-5.6 Sol82.1%
    Source

    Not directly comparable

  • HealthBench Professional

    Gemma 4 26B A4B—
    GPT-5.6 Sol60.5%
    Source

    Not directly comparable

  • HealthBench Hard

    Gemma 4 26B A4B—
    GPT-5.6 Sol33.1%
    Source

    Not directly comparable

  • GPQA Diamond (Vals)

    Gemma 4 26B A4B—
    GPT-5.6 Sol95.2%
    Source

    Not directly comparable

  • MMLU-Pro (Vals)

    Gemma 4 26B A4B—
    GPT-5.6 Sol89.1%
    Source

    Not directly comparable

Math

  • FrontierMath (legacy)

    Gemma 4 26B A4B—
    GPT-5.6 Sol89%
    Source

    Not directly comparable

  • FrontierMath v2 (Tiers 1-3)

    Gemma 4 26B A4B—
    GPT-5.6 Sol89.000%
    Source

    Not directly comparable

  • FrontierMath v2 (Tier 4)

    Gemma 4 26B A4B—
    GPT-5.6 Sol83.000%
    Source

    Not directly comparable

40 public results · 1 shared

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Last updated September 24, 2026