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Gemini 4 Carbon vs GPT-6 Sol

Updated October 28, 2026. Rank says Gemini 4 Carbon is ahead. Price, access, and your workload can each overturn that. Public scores include evidence status and uncertainty.

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Decision reading

Gemini 4 Carbon has the higher public point estimate, 88.42 versus 78. Their conditional score ranges overlap. These ranges do not establish rank confidence. 4 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

88.42/100

Estimated · Public rank #1

Conditional range 74.1–100.0

Model B
OpenAI logo

OpenAI

78/100

Supported · Public rank #11

90% interval 74.7–81.3

Shared results
4
Gemini 4 Carbon only
5
GPT-6 Sol only
20
Like-for-like categories
1 / 8
Estimated: Gemini 4 Carbon · Supported: GPT-6 Sol. Conditional ranges do not establish rank confidence.How 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

    Gemini 4 Carbon

    Gemini 4 Carbon has the higher public coding point estimate, 82.2 to 66.6, with Supported evidence for both models. The conditional ranges do not establish rank confidence.

    Confidence: limited
  • Cache-heavy agent loop cost

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

    Gemini 4 Carbon

    Gemini 4 Carbon has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.

    Confidence: listed-rates
Show secondary and unsupported calls
  • Agentic work

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

    Not enough matched evidence

    Gemini 4 Carbon is not ranked on the public lane for agentic, so no winner is named for agentic.

    Confidence: limited
  • Long documents

    Prompts that approach the documented context limit

    Not enough matched evidence

    A complete context comparison is not sourced.

    Confidence: limited
  • Chat turn cost

    1K fresh input + 500 output tokens

    No clear pick

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

    Confidence: listed-rates
  • Repository review cost

    50K fresh input + 3K 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.

82.2Gemini 4 Carbon66.6GPT-6 Sol

Like-for-like · BenchAlign v5.8

Gemini 4 Carbon has the higher coding point estimate. Conditional score ranges do not establish rank confidence.

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 v5.8 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
Gemini 4 Carbon
82.2
Supported · #3/156
GPT-6 Sol
66.6
Supported · #12/156
Basis
BenchAlign v5.8 lane · 1 vs 2 public rows
Reading
Gemini 4 Carbon leads · intervals overlap

Knowledge

Directional only
Gemini 4 Carbon
88.2
Supported · #2/178
GPT-6 Sol
80.1
Estimated · #10/178
Basis
BenchAlign v5.8 lane · 0 vs 5 public rows
Reading
Directional only

Agentic

Not comparable
Gemini 4 Carbon
Not ranked
GPT-6 Sol
58.1
Supported · #35/134
Basis
BenchAlign v5.8 lane · 4 vs 8 public rows
Reading
Not comparable

Reasoning

Not comparable
Gemini 4 Carbon
79.5
Unranked · 2 rankable rows
GPT-6 Sol
73.1
#14/26
Basis
Provisional lane · 0 vs 2 weighted rows
Reading
Not comparable

Multimodal

Not comparable
Gemini 4 Carbon
Not ranked
GPT-6 Sol
87.5
Unranked · 1 rankable row
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Multilingual

Not comparable
Gemini 4 Carbon
Not ranked
GPT-6 Sol
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Instruction following

Not comparable
Gemini 4 Carbon
Not ranked
GPT-6 Sol
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Math

Not comparable
Gemini 4 Carbon
Not ranked
GPT-6 Sol
97.3
Unranked · 2 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 v5.8) 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 4 Carbon
$0.007
Fit state unavailable
GPT-6 Sol
$0.007
Fits in one request

Modeled costs are equal

Costs use the listed standard API rates.

Repository review

50K fresh input + 3K output tokens

Gemini 4 Carbon
$0.13
Fit state unavailable
GPT-6 Sol
$0.13
Fits in one request

Modeled costs are equal

Costs use the listed standard API rates.

Cache-heavy agent loop

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

Gemini 4 Carbon
$0.16
Fit state unavailable
GPT-6 Sol
$0.18
Fits in one request

Gemini 4 Carbon has the lower modeled cost

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 4 Carbon

Reasoning

GPT-6 Sol

Reasoning

Weight access

Gemini 4 Carbon

Proprietary

GPT-6 Sol

Proprietary

License

Gemini 4 Carbon

Proprietary

GPT-6 Sol

Proprietary

Release date

Gemini 4 Carbon

2026-10-28

GPT-6 Sol

2026-09-22

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
Gemini 4 Carbon has the higher public point estimate, 88.42 versus 78. Their conditional score ranges overlap. These ranges do not establish rank confidence.
Workload cost
Repository review: $0.13 vs $0.13. Cache-heavy agent loop: $0.16 vs $0.18.
Context tradeoff
A complete documented context comparison is not available.
Run the same representative tasks against both endpoints before changing production traffic.

Questions

Which is better, Gemini 4 Carbon or GPT-6 Sol?

Gemini 4 Carbon has the higher public point estimate, 88.42 versus 78. Their conditional score ranges overlap. These ranges do not establish rank confidence. The page therefore keeps the decision tied to the specific documented workload.

Which is better for coding, Gemini 4 Carbon or GPT-6 Sol?

Gemini 4 Carbon has the higher public coding point estimate, 82.2 to 66.6, with Supported evidence for both models. The conditional ranges do not establish rank confidence.

Which is better for agentic tasks, Gemini 4 Carbon or GPT-6 Sol?

Gemini 4 Carbon is not ranked on the public lane for agentic tasks, so no winner is named for agentic tasks.

Which costs less, Gemini 4 Carbon or GPT-6 Sol?

For the stated presets, chat costs $0.007 on Gemini 4 Carbon and $0.007 on GPT-6 Sol; repository review costs $0.13 and $0.13; the cache-heavy agent loop costs $0.16 and $0.18. Costs use the listed standard API rates.

Which has the larger context window, Gemini 4 Carbon or GPT-6 Sol?

A complete documented context-window comparison is not available.

Benchmark evidence

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

Browse raw public benchmark evidence29 rows

Agentic

  • AutomationBench

    Gemini 4 Carbon53.9%
    Source
    GPT-6 Sol33.2%
    Source

    Gemini 4 Carbon leads this result

  • OSWorld 2.1 Offline

    Gemini 4 Carbon81.5%
    Source
    GPT-6 Sol—

    Not directly comparable

  • CWE-bench v1

    Shared source
    Gemini 4 Carbon71.0%
    GPT-6 Sol52.0%

    Gemini 4 Carbon leads this result

  • ExploitGym

    Gemini 4 Carbon53.5%
    Source
    GPT-6 Sol22.1%
    Source

    Gemini 4 Carbon leads this result

  • Agents' Last Exam

    Gemini 4 Carbon—
    GPT-6 Sol56.4%
    Source

    Not directly comparable

  • OSWorld 2.0

    Gemini 4 Carbon—
    GPT-6 Sol60.5%
    Source

    Not directly comparable

  • Hermes Index

    Gemini 4 Carbon—
    GPT-6 Sol44.1%
    Source

    Not directly comparable

  • Hermes Bench

    Gemini 4 Carbon—
    GPT-6 Sol73.5%
    Source

    Not directly comparable

  • MazeBench

    Gemini 4 Carbon—
    GPT-6 Sol7%
    Source

    Not directly comparable

Coding

  • FrontierSWE v2

    Gemini 4 Carbon61.2%
    Source
    GPT-6 Sol—

    Not directly comparable

  • DeepSWE

    Gemini 4 Carbon—
    GPT-6 Sol68.8%
    Source

    Not directly comparable

  • FrontierCode 2.0

    Gemini 4 Carbon—
    GPT-6 Sol34.3%
    Source

    Not directly comparable

Reasoning

  • GraphWalks BFS 256K–1M

    Gemini 4 Carbon96.2%
    Source
    GPT-6 Sol—

    Not directly comparable

  • ARC-AGI-1

    Gemini 4 Carbon—
    GPT-6 Sol95.50%
    Source

    Not directly comparable

  • ARC-AGI-2

    Gemini 4 Carbon—
    GPT-6 Sol89.6%
    Source

    Not directly comparable

  • ARC-AGI-3

    Gemini 4 Carbon—
    GPT-6 Sol4.6%
    Source

    Not directly comparable

  • ARC-AGI-3 Provider Adapter

    Gemini 4 Carbon—
    GPT-6 Sol23.03%
    Source

    Not directly comparable

Multimodal

  • Chartography (no tools)

    Gemini 4 Carbon72.5%
    Source
    GPT-6 Sol—

    Not directly comparable

  • Blueprint-Bench 2

    Gemini 4 Carbon58.6%
    Source
    GPT-6 Sol—

    Not directly comparable

  • ExtractBench (LlamaIndex)

    Gemini 4 Carbon—
    GPT-6 Sol94.57%
    Source

    Not directly comparable

  • ParseBench

    Gemini 4 Carbon—
    GPT-6 Sol68.89%
    Source

    Not directly comparable

Knowledge

  • HealthBench (raw)

    Gemini 4 Carbon—
    GPT-6 Sol47.1%
    Source

    Not directly comparable

  • HealthBench (length-adjusted)

    Gemini 4 Carbon—
    GPT-6 Sol53.2%
    Source

    Not directly comparable

  • HealthBench Professional

    Gemini 4 Carbon—
    GPT-6 Sol60.8%
    Source

    Not directly comparable

  • HealthBench Professional (raw)

    Gemini 4 Carbon—
    GPT-6 Sol59.5%
    Source

    Not directly comparable

  • HealthBench Hard

    Gemini 4 Carbon—
    GPT-6 Sol30.1%
    Source

    Not directly comparable

Instruction following

  • Gray Swan IPI (15 attempts)

    Gemini 4 Carbon0.0%
    Source
    GPT-6 Sol10.1%
    Source

    Gemini 4 Carbon leads this result

Math

  • FrontierMath v2 (Tiers 1-3)

    Gemini 4 Carbon—
    GPT-6 Sol89.825%
    Source

    Not directly comparable

  • FrontierMath v2 (Tier 4)

    Gemini 4 Carbon—
    GPT-6 Sol90.000%
    Source

    Not directly comparable

29 public results · 4 shared

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Last updated October 28, 2026