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Gemma 4 26B A4B

Gemma 4 26B A4B API combines strong reasoning, natural language processing, and optimized inference efficiency.
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Gemma 4 26B A4B

Gemma 4 26B A4B delivers a compelling combination of language intelligence, reasoning capability, scalability, and operational efficiency.

What is Gemma 4 26B A4B API?

Gemma 4 26B A4B is the Mixture-of-Experts (MoE) entry in Google DeepMind's Gemma 4 open model family, released on April 3, 2026. The name is precise: 26 billion total parameters, with 4 billion active on any given token.

The model is built on the same Gemini 3 research architecture that powers Google's proprietary frontier models. It ships under the Apache 2.0 license, meaning it's free to use commercially, modify, and redistribute.

Model Specifications

Architecture Mixture-of-Experts (MoE)
Total parameters 25.2B (~26B)
Active parameters / token ~3.8B
Experts per MoE layer 128 (2 active per token)
Context window 262,144 tokens
License Apache 2.0

Performance Benchmarks

Results below are from instruction-tuned models across standard public evaluations. Gemma 4 26B A4B is compared against its closest open-weight competitors and its immediate family sibling.

Benchmark Gemma 4 26B A4B Gemma 4 31B Gemma 3 27B Qwen 3.5 27B
AIME 2026 (math) 88.3% 89.2% 20.8%
LiveCodeBench v6 (coding) 77.1% 80.0% 29.1%
GPQA Diamond (graduate sci.) 82.3% 84.3% 42.4%
MMLU Pro (multilingual QA) 84.1% 85.2% ~83.5%
τ²-bench (agentic tool use) 84.1% 86.4% 6.6%
Chatbot Arena ELO 1441 1452 1365 1403

API Pricing

  • Input: $0.195 per 1MTok
  • Output: $0.78 per 1MTok

Where to Use Gemma 4 26B A4B

Long-context extraction and summarization

Send full legal contracts, research papers, annual reports, or code repositories in a single prompt. The 262K context window means you don't need chunking logic — the model can cross-reference sections and maintain coherence across the whole document.

Multi-step tool-use and function calling

With native function calling and strong τ²-bench scores, this model is built for agent loops where it needs to plan actions, call tools, process results, and iterate — without losing track of what it was originally asked to do.

Complex problem solving with thinking mode

Turn on thinking mode for STEM tasks, financial modeling, logic puzzles, and data analysis. The model works through the problem step-by-step in an internal reasoning channel before surfacing a clean answer.

Localization and cross-language content

Trained across 140+ languages, this model handles translation, multilingual summarization, and cross-language Q&A without switching between specialized models. One integration, many markets.

Repository-level coding tasks

Pass entire codebases in-context for refactoring, test generation, documentation, or bug hunting. The long context window is the key differentiator here — smaller models force you to isolate files, which breaks cross-file reasoning.

Image and video understanding

Send product images for classification, architectural diagrams for explanation, or short video clips for scene analysis. The model handles variable image resolutions without forcing you to pre-resize assets.

Gemma 4 26B A4B vs. the Alternatives

The Gemma 4 family gives you real options. Here's how to think about which one fits your workload.

  • Gemma 4 26B A4B: Best balance of quality and cost in the family. Inference speed comparable to a 4B model. Choose this for production workloads where throughput and latency matter, or when you need a long context on constrained memory budgets.
  • Gemma 4 31B: The dense architecture delivers slightly higher benchmark scores and more predictable per-token performance. Choose this if you need maximum quality on a single high-VRAM GPU, and can accept slower throughput versus the MoE.
  • Gemma 4 E4B / E2B: Edge-optimized models with a 128K context window. Designed for on-device or mobile deployments. Choose these for embedded use cases, voice applications, or any scenario where the full server-class stack isn't available.

What is Gemma 4 26B A4B API?

Gemma 4 26B A4B is the Mixture-of-Experts (MoE) entry in Google DeepMind's Gemma 4 open model family, released on April 3, 2026. The name is precise: 26 billion total parameters, with 4 billion active on any given token.

The model is built on the same Gemini 3 research architecture that powers Google's proprietary frontier models. It ships under the Apache 2.0 license, meaning it's free to use commercially, modify, and redistribute.

Model Specifications

Architecture Mixture-of-Experts (MoE)
Total parameters 25.2B (~26B)
Active parameters / token ~3.8B
Experts per MoE layer 128 (2 active per token)
Context window 262,144 tokens
License Apache 2.0

Performance Benchmarks

Results below are from instruction-tuned models across standard public evaluations. Gemma 4 26B A4B is compared against its closest open-weight competitors and its immediate family sibling.

Benchmark Gemma 4 26B A4B Gemma 4 31B Gemma 3 27B Qwen 3.5 27B
AIME 2026 (math) 88.3% 89.2% 20.8%
LiveCodeBench v6 (coding) 77.1% 80.0% 29.1%
GPQA Diamond (graduate sci.) 82.3% 84.3% 42.4%
MMLU Pro (multilingual QA) 84.1% 85.2% ~83.5%
τ²-bench (agentic tool use) 84.1% 86.4% 6.6%
Chatbot Arena ELO 1441 1452 1365 1403

API Pricing

  • Input: $0.195 per 1MTok
  • Output: $0.78 per 1MTok

Where to Use Gemma 4 26B A4B

Long-context extraction and summarization

Send full legal contracts, research papers, annual reports, or code repositories in a single prompt. The 262K context window means you don't need chunking logic — the model can cross-reference sections and maintain coherence across the whole document.

Multi-step tool-use and function calling

With native function calling and strong τ²-bench scores, this model is built for agent loops where it needs to plan actions, call tools, process results, and iterate — without losing track of what it was originally asked to do.

Complex problem solving with thinking mode

Turn on thinking mode for STEM tasks, financial modeling, logic puzzles, and data analysis. The model works through the problem step-by-step in an internal reasoning channel before surfacing a clean answer.

Localization and cross-language content

Trained across 140+ languages, this model handles translation, multilingual summarization, and cross-language Q&A without switching between specialized models. One integration, many markets.

Repository-level coding tasks

Pass entire codebases in-context for refactoring, test generation, documentation, or bug hunting. The long context window is the key differentiator here — smaller models force you to isolate files, which breaks cross-file reasoning.

Image and video understanding

Send product images for classification, architectural diagrams for explanation, or short video clips for scene analysis. The model handles variable image resolutions without forcing you to pre-resize assets.

Gemma 4 26B A4B vs. the Alternatives

The Gemma 4 family gives you real options. Here's how to think about which one fits your workload.

  • Gemma 4 26B A4B: Best balance of quality and cost in the family. Inference speed comparable to a 4B model. Choose this for production workloads where throughput and latency matter, or when you need a long context on constrained memory budgets.
  • Gemma 4 31B: The dense architecture delivers slightly higher benchmark scores and more predictable per-token performance. Choose this if you need maximum quality on a single high-VRAM GPU, and can accept slower throughput versus the MoE.
  • Gemma 4 E4B / E2B: Edge-optimized models with a 128K context window. Designed for on-device or mobile deployments. Choose these for embedded use cases, voice applications, or any scenario where the full server-class stack isn't available.
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