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Google Gemma 4 26B A4B VS OpenAI GPT-5.6 Terra

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, Gemma 4 26B A4B is the premium intelligence choice, scoring 13.7% higher on coding benchmarks. It also maintains strong cost efficiency. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, GPT-5.6 Terra offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of Gemma 4 26B A4B fully justifies the cost.
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Model Specs

Gemma 4 26B A4B

Benchmarks & Scores

Coding (live-code-bench)
77.1%

good at single-file apps, building games & UIs, and scripting new logic

Reasoning (gpqa-diamond)
82.3%

graduate-level science QA

Cost & Performance

Cost (per 1M tokens)
N/AInput: N/A | Output: N/A
Context Window
262.14k tokens
Model Specs

GPT-5.6 Terra

Benchmarks & Scores

Coding (swe-bench-pro)
63.4%

excellent at multi-file repositories, autonomous agents, and industrial codebases

Reasoning (gpqa-diamond)Winner (+10.6%)
92.9%

graduate-level science QA

Cost & Performance

Cost (per 1M tokens)
$5.63Input: $2.50 | Output: $15.00
Context WindowLarger
1.05M tokens

Frequently Asked Questions about Gemma 4 26B A4B vs GPT-5.6 Terra comparison

For coding tasks, Gemma 4 26B A4B scores 77.1% on live-code-bench (good at single-file apps, building games & UIs, and scripting new logic), while GPT-5.6 Terra scores 63.4% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases).