Skip to main content
Radar

Five or fewer confirmed AI changes, with original sources, on mornings when something changed.A free source-linked morning brief.

See the free Radar Brief
Google logo
Model A
Gemma 4 E4B

Google

42.92/100

Estimated · Public rank #179

90% interval 31.454.4

Gemma 4 E4B vs GPT-5.5

Updated September 4, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.

OpenAI logo
Model B
GPT-5.5

OpenAI

73.27/100

Supported · Public rank #9

90% interval 71.075.6

Decision reading

GPT-5.5 has the higher public score, 73.27 versus 42.92, 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.

Share or export

Share on XLinkedInSocial cardCSVJSON

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.

  • Long documents

    Prompts that approach the documented context limit

    GPT-5.5

    GPT-5.5 has the larger documented context window.

    Confidence: documented

Show secondary and unsupported calls
  • Coding work

    Code generation, repair, and software-engineering tasks

    Not enough matched evidence

    Gemma 4 E4B is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like.

    Confidence: limited

  • Agentic work

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

    Not enough matched evidence

    Gemma 4 E4B is scored on Estimated evidence for agentic, so the reading is directional rather than like-for-like.

    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

    The page does not recommend a cost winner because at least one model cannot fit the stated workload in one request. Gemma 4 E4B does not fit this workload in one request. Gemma 4 E4B has no comparable published API token rate.

    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

What is actually comparable

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

Shared results
1
Gemma 4 E4B only
1
GPT-5.5 only
37
Like-for-like categories
0 / 8

4 categories rest on Estimated evidence or different evidence sets. Those rows remain visible for coverage context but do not name a winner.

Category results, on a stated basis

Each row shows the public-lane category score for both models: the BenchAlign 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

Directional only
Gemma 4 E4B
45.9
Estimated · #91/151
GPT-5.5
63.9
Supported · #15/151
Basis
BenchAlign lane · 0 vs 13 public rows
Reading
Directional only

Coding

Directional only
Gemma 4 E4B
41.5
Estimated · #131/183
GPT-5.5
67.7
Supported · #8/183
Basis
BenchAlign lane · 0 vs 9 public rows
Reading
Directional only

Knowledge

Directional only
Gemma 4 E4B
39.3
Estimated · #143/181
GPT-5.5
73.3
Supported · #7/181
Basis
BenchAlign lane · 2 vs 6 public rows
Reading
Directional only

Instruction following

Directional only
Gemma 4 E4B
51.8
#77/120
GPT-5.5
92.9
#7/120
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Directional only

Reasoning

Not comparable
Gemma 4 E4B
44.7
Unranked · 2 rankable rows
GPT-5.5
63.5
#15/22
Basis
Provisional lane · 0 vs 2 weighted rows
Reading
Not comparable

Math

Not comparable
Gemma 4 E4B
Not ranked
GPT-5.5
69.6
Unranked · 3 rankable rows
Basis
Provisional lane · 0 vs 2 weighted rows
Reading
Not comparable

Multilingual

Not comparable
Gemma 4 E4B
Not ranked
GPT-5.5
Not ranked
Basis
Provisional lane · 0 vs 0 weighted rows
Reading
Not comparable

Multimodal

Not comparable
Gemma 4 E4B
35.8
Unranked · 1 rankable row
GPT-5.5
71.3
#19/48
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) differ from the provisional-lane categories. Unranked scores sit on the lane’s scale but never name a winner. Like-for-like rows within 0.5 points read as a practical tie.

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.

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 E4B
Self-hosted; infrastructure cost varies
Fits in one request
GPT-5.5
$0.02
Fits in one request

Gemma 4 E4B has no comparable published API token rate.

Repository review

50K fresh input + 3K output tokens

Gemma 4 E4B
Self-hosted; infrastructure cost varies
Fits in one request
GPT-5.5
$0.34
Fits in one request

Gemma 4 E4B has no comparable published API token rate.

Cache-heavy agent loop

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

Gemma 4 E4B
Self-hosted; infrastructure cost varies
Does not fit in one request
Cached-input rate unavailable
GPT-5.5
$0.5
Fits in one request

Gemma 4 E4B does not fit this workload in one request. Gemma 4 E4B has no comparable published API token rate.

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 E4B

No comparable hosted API rate

GPT-5.5

$0.5 per 1M cached input tokens

OpenAI pricing

Reasoning profile

Gemma 4 E4B

Reasoning

GPT-5.5

Reasoning

Weight access

Gemma 4 E4B

Open Weight

GPT-5.5

Proprietary

License

Gemma 4 E4B

Open Weight

GPT-5.5

Proprietary

Release date

Gemma 4 E4B

2026-04-02

GPT-5.5

2026-04-23

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-5.5 has the higher public score, 73.27 versus 42.92, 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-5.5 has the larger documented window (1M).

Run the same representative tasks against both endpoints before changing production traffic.

Benchmark evidence

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

Browse raw public benchmark evidence39 rows

Agentic

  • Terminal-Bench 2.0

    Gemma 4 E4B
    GPT-5.582%
    Source

    Not directly comparable

  • CyberGym

    Gemma 4 E4B
    GPT-5.581.8%
    Source

    Not directly comparable

  • BrowseComp

    Gemma 4 E4B
    GPT-5.584.4%
    Source

    Not directly comparable

  • OSWorld-Verified

    Gemma 4 E4B
    GPT-5.578.7%
    Source

    Not directly comparable

  • MCP Atlas

    Gemma 4 E4B
    GPT-5.575.3%
    Source

    Not directly comparable

  • Toolathlon

    Gemma 4 E4B
    GPT-5.555.6%
    Source

    Not directly comparable

  • τ²-bench results

    Gemma 4 E4B
    GPT-5.598%
    Source

    Not directly comparable

  • Gert Labs

    Gemma 4 E4B
    GPT-5.572.93%
    Source

    Not directly comparable

  • ResearchClawBench

    Gemma 4 E4B
    GPT-5.517.0%
    Source

    Not directly comparable

  • OSWorld 2.0

    Gemma 4 E4B
    GPT-5.513.0%
    Source

    Not directly comparable

  • JobBench

    Gemma 4 E4B
    GPT-5.542.7%
    Source

    Not directly comparable

  • ExploitGym

    Gemma 4 E4B
    GPT-5.513.4%
    Source

    Not directly comparable

  • Terminal-Bench 2.1 (Vals)

    Gemma 4 E4B
    GPT-5.576.4%
    Source

    Not directly comparable

Coding

  • SWE-bench Pro

    Gemma 4 E4B
    GPT-5.558.6%
    Source

    Not directly comparable

  • Terminal-Bench 2.0

    Gemma 4 E4B
    GPT-5.582.0%
    Source

    Not directly comparable

  • Vibe Code Bench

    Gemma 4 E4B
    GPT-5.569.85%
    Source

    Not directly comparable

  • React Native Evals

    Gemma 4 E4B
    GPT-5.584.7%
    Source

    Not directly comparable

  • cursorBench31

    Gemma 4 E4B
    GPT-5.559.2%
    Source

    Not directly comparable

  • cursorBench32

    Gemma 4 E4B
    GPT-5.558.4%
    Source

    Not directly comparable

  • FrontierCode 1.1 Main

    Gemma 4 E4B
    GPT-5.543.0%
    Source

    Not directly comparable

  • LiveCodeBench (Vals)

    Gemma 4 E4B
    GPT-5.585.3%
    Source

    Not directly comparable

  • SWE-bench (Vals)

    Gemma 4 E4B
    GPT-5.582.6%
    Source

    Not directly comparable

Reasoning

  • MRCR v2 64K-128K

    Gemma 4 E4B
    GPT-5.583.1%
    Source

    Not directly comparable

  • MRCR v2 128K-256K

    Gemma 4 E4B
    GPT-5.587.5%
    Source

    Not directly comparable

  • ARC-AGI-2

    Gemma 4 E4B
    GPT-5.585%
    Source

    Not directly comparable

  • ARC-AGI-3

    Gemma 4 E4B
    GPT-5.50.4%
    Source

    Not directly comparable

Knowledge

  • GPQA

    Gemma 4 E4B58.6%
    Source
    GPT-5.593.6%
    Source

    GPT-5.5 leads this result

  • MMLU-Pro

    Gemma 4 E4B69.4%
    Source
    GPT-5.5

    Not directly comparable

  • GPQA-D

    Gemma 4 E4B
    GPT-5.593.6%
    Source

    Not directly comparable

  • HLE

    Gemma 4 E4B
    GPT-5.552.2%
    Source

    Not directly comparable

  • HLE w/o tools

    Gemma 4 E4B
    GPT-5.541.4%
    Source

    Not directly comparable

  • GPQA Diamond (Vals)

    Gemma 4 E4B
    GPT-5.593.2%
    Source

    Not directly comparable

  • MMLU-Pro (Vals)

    Gemma 4 E4B
    GPT-5.588.1%
    Source

    Not directly comparable

Math

  • FrontierMath (legacy)

    Gemma 4 E4B
    GPT-5.551.7%
    Source

    Not directly comparable

  • FrontierMath v2 (Tiers 1-3)

    Gemma 4 E4B
    GPT-5.551.700%
    Source

    Not directly comparable

  • FrontierMath v2 (Tier 4)

    Gemma 4 E4B
    GPT-5.535.400%
    Source

    Not directly comparable

Multimodal

  • MMMU-Pro

    Gemma 4 E4B
    GPT-5.581.2%
    Source

    Not directly comparable

  • MMMU-Pro w/ Python

    Gemma 4 E4B
    GPT-5.583.2%
    Source

    Not directly comparable

  • OfficeQA Pro

    Gemma 4 E4B
    GPT-5.554.1%
    Source

    Not directly comparable

Frequently asked questions

Which is better, Gemma 4 E4B or GPT-5.5?

GPT-5.5 has the higher public score, 73.27 versus 42.92, 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 E4B or GPT-5.5?

GPT-5.5 scores higher for coding on the public lane, 67.7 to 41.5. Gemma 4 E4B is scored on Estimated evidence for coding, so the reading is directional rather than like-for-like. BenchLM does not name a winner for coding from a directional reading; read the shared benchmark rows directly and test the models on the same task set.

Which is better for agentic tasks, Gemma 4 E4B or GPT-5.5?

GPT-5.5 scores higher for agentic tasks on the public lane, 63.9 to 45.9. Gemma 4 E4B is scored on Estimated evidence for agentic tasks, so the reading is directional rather than like-for-like. BenchLM does not name a winner for agentic tasks from a directional reading; read the shared benchmark rows directly and test the models on the same task set.

Which costs less, Gemma 4 E4B or GPT-5.5?

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 E4B or GPT-5.5?

GPT-5.5 has the larger documented context window: 1M, compared with 128K.

Related comparisons

Last updated September 4, 2026

Watch Gemma 4 E4B vs GPT-5.5

One weekly email when material rank, price, or benchmark evidence changes make this matchup worth revisiting.

Read a sample issue

Join 2,000+ readers.