Model Performance
Best Open-Weight Models for Serverless AI Inference: GLM-5.2, Gemma 4, Llama 4, & Qwen 3.5 Compared
A numbers-first, architecture-level comparison of GLM-5.2, Gemma 4, Llama 4 Scout, and Qwen 3.5 for production deployment in India.
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Last Updated
September 5, 2026

TL;DR

  • Match Workload to Model: Stop chasing general leaderboards; choose models based on specific production demands like coding, RAG, documents, or voice.
  • Prioritize Cost vs. Quality: Balance heavy reasoning models like GLM-5.2 (744B-parameter MoE, 40B active) against highly economical, high-volume options like Gemma 4 31B.
  • Watch License Restrictions: While Gemma and GLM offer frictionless Apache 2.0 / MIT terms, Meta's Llama 4 Scout is governed by the Llama 4 Community License, which includes a 700-million MAU cap (above which a separate license from Meta is required) and mandatory "Built with Llama" attribution on derivatives.
  • Leverage Massive Context: Use Llama 4 Scout for its industry-leading 10M-token context on large RAG archives, or GLM-5.2 for its 1M-token context on full repository codebases, both without lossy chunking.
  • Deploy via Unified Serverless: Avoid provisioning separate GPU clusters by using autoscaling platforms like Simplismart, which supports dynamic GPU partitioning and modality-aware autoscaling to serve multiple models efficiently behind shared infrastructure.

When you're shortlisting an open-weight model for a production serverless deployment in India right now, you are looking at four distinct heavyweights. Chasing the abstract title of "best model" is a trap; the real question is which architecture matches your specific workload, latency target, and licensing risk profile.

Here is a grounded, numbers-first breakdown comparing the four models that Indian engineering teams are actually putting into production this August 2026.

The Evaluation Framework

When moving past marketing leaderboards to evaluate open-weight models for production serverless deployment in India, a serious architecture review must score candidates across five critical dimensions rather than a single aggregated benchmark number:

  • Quality: Task-specific performance mapped directly to real-world engineering workflows, such as multi-file code generation, complex logical reasoning, multilingual handling across regional Indian scripts, and long-context document retrieval.
  • Cost on a Shared Serverless Endpoint: Measured in INR per million input and output tokens, capturing the true transactional economics that dictate your monthly cloud spend.
  • Latency from India: The combined round-trip network time and raw inference token-generation speed when requests are served directly from regional data centers in India rather than US-based regions.
  • License Risk: Legal exposure regarding commercial usage, monthly active user (MAU) thresholds, export restrictions, attribution clauses, and training-data provenance.
  • Context Window: The maximum token length supported in a single request, determining whether your pipeline can ingest entire legal contracts, codebases, or financial filings without lossy chunking.

The four models evaluated below occupy distinct, highly strategic positions across these five axes, giving Indian engineering teams practical alternatives tailored to different production profiles.

The Comparison Table

Dimension

GLM-5.2 (Z.ai)

Gemma 4 31B (Google DeepMind)

Llama 4 Scout (Meta)

Qwen 3.5 27B (Alibaba)

Released

June 13, 2026

April 2, 2026

April 5, 2025

February 24, 2026

Architecture

MoE, ~744B total / ~40B active

Dense, 30.7B

MoE, 109B total / 17B active (16 experts)

Dense, 27B

Context window

1,048,576 tokens (1M)

262,144 tokens (256K)

10,000,000 tokens (10M), largest of any open model

256K tokens (family-wide)

Modality

Text only

Text + image (audio on smaller variants, not 31B)

Text + image

Text + image

Reference API pricing (USD/1M tokens)*

$1.40 in / $4.40 out

$0.09 in / $0.34 out

$0.18 in / $0.66 out

$0.30 in / $2.40 out

Approx. INR equivalent*

~₹134 in / ₹421 out

~₹8.6 in / ₹33 out

~₹17 in / ₹63 out

~₹29 in / ₹230 out

Reasoning/coding benchmark

99%+ on AIME; ~89–91% GPQA Diamond; leads open models on SWE-bench Pro

Solid mid-tier reasoning; strong document/coding gains over Gemma 3

Strong for its class; best-in-class long-context retrieval (near-perfect needle-in-haystack at 10M tokens)

Strong instruction-following (IFBench 76.5); competitive multilingual reasoning

License

MIT, fully permissive, no caps

Apache 2.0, fully permissive, no caps

Llama 4 Community License, custom, restrictive

Apache 2.0, fully permissive, no caps

Language coverage

Not a stated focus (text/code-oriented)

140+ languages

200 languages (pretraining), English-centric benchmarks

201 languages, explicit multilingual design goal

The License Risk Column, in Detail

This is the section most comparison articles gloss over, yet it's where legal exposure hides.

  • Llama 4 Scout, the 700M MAU Cap, and Operational Strings: Meta's Llama 4 Community License Agreement is a custom commercial license rather than a true open-source license under OSI definitions. Its most notable clause states that if your product or service (including affiliates) exceeded 700 million monthly active users as of the Llama 4 release date, you must request a separate, discretionary license from Meta before you're authorized to use the model. While this cap is practically irrelevant for almost every Indian startup and mid-size enterprise today, other clauses carry real operational friction: mandatory "Built with Llama" attribution, a strict requirement that any derivative AI model include "Llama" at the beginning of its name, and EU-specific restrictions on multimodal (vision) variants. None of these terms are automatic dealbreakers, but they mandate a formal legal review prior to scaled commercial deployment. 
  • GLM-5.2, MIT, No Restrictions: The MIT license provides maximum freedom. Commercial use, modification, redistribution, and air-gapped or private-cloud self-hosting are fully permitted with minimal attribution requirements. No MAU ceilings, regional carve-outs, or training-data restrictions.
  • Gemma 4 31B, Apache 2.0, No Restrictions: Google adopted the standard Apache 2.0 license for this generation, successfully clearing away the ambiguity that accompanied earlier Gemma releases. Commercial use, modification, and fine-tuning are completely unrestricted.
  • Qwen 3.5 27B, Apache 2.0, No Restrictions: Identical to Gemma 4, this model is fully permissive under Apache 2.0 with no user thresholds, revenue caps, or restrictions on derivative model training.

Bottom line on license risk: For Indian tech teams seeking zero legal ambiguity regarding fine-tuning, redistribution, and enterprise scaling, GLM-5.2, Gemma 4, and Qwen 3.5 remove licensing friction entirely. Llama 4 Scout's restrictions remain entirely manageable for most domestic engineering teams, but they represent binding legal terms rather than mere formalities.

Use Case Mapping

When mapping models to specific production workloads in India, each option excels in a distinct domain:

  • Voice AI and Multilingual Assistants → Qwen 3.5 27B: Featuring explicit support across 201 languages and dialects alongside high instruction-following scores, Qwen 3.5 is the ideal choice when your product must fluidly handle Hindi, Tamil, Bengali, Marathi, and English within the same pipeline without a quality drop-off on non-English inputs. Furthermore, its dense (rather than MoE) architecture delivers more predictable per-token latency, a critical requirement for real-time voice applications.
  • Coding Agents and Long-Horizon Dev Workflows→  GLM-5.2: Purpose-built for agentic development, GLM-5.2 offers a 1M-token context window capable of ingesting an entire code repository, elite performance on SWE-bench Pro, and a fully permissive MIT license. If your engineering team is building an internal dev-agent tool or a commercial coding assistant, this is the foundational model to start with.
  • Enterprise Document Processing → Gemma 4 31B: Combining native multimodal input (text and image), a 256K context window, and significantly lower reference token pricing than its competitors, Gemma 4 31B excels in high-volume pipelines like invoice processing, contract review, and form extraction. When running large volumes of bounded-length documents, cost-per-token dominates the balance sheet, making this the most economical production choice.
  • RAG and Long-Document Retrieval → Llama 4 Scout: No other open-weight model matches Scout's 10-million-token context window, which achieves near-perfect retrieval accuracy in needle-in-haystack evaluations. For RAG architectures where you want to minimize complex chunking, dumping massive document libraries or multi-year conversation histories directly into context, Scout is uniquely built for that scale.

The Verdict: No Hedging

  • Building a coding agent or internal dev tool? Start with GLM-5.2. Its massive context window and elite coding benchmarks are purpose-fit for software engineering workflows, and MIT licensing ensures absolute zero legal friction as your product scales.
  • Processing high volumes of enterprise documents? Start with Gemma 4 31B. It offers the most economical per-token pricing on this list, handles native text and images seamlessly, and is backed by a clean Apache 2.0 license.
  • Building a RAG system over massive document archives or long user histories? Start with Llama 4 Scout. Its industry-first 10-million-token context window is unmatched by any alternative; just factor in time for a brief legal review to handle the MAU cap and attribution terms.
  • Building multilingual voice AI across diverse Indian languages? Start with Qwen3.5 27B. Its support for 201 languages and dialects, dense 27B-parameter architecture, and Apache 2.0 license make it a strong default for voice and chat applications operating beyond English.

Deploying these architectures on a production serverless endpoint offers an advantage that extends beyond choosing the right model: the ability to run multiple specialized models behind a single infrastructure layer without provisioning separate GPU clusters. Platforms like Simplismart host broad libraries of open-weight models on autoscaling, scale-to-zero endpoints, allowing engineering teams to route different workflows- voice, coding, documents, and RAG- directly to the model designed for each task, eliminating the operational overhead of managing underlying hardware.

Confirm current model availability and shared-endpoint pricing directly at simplismart.ai before finalizing your production stack to account for rapid catalog updates.

Frequently Asked Questions (FAQ)

Which open-weight model is best for building coding agents and developer tools?

GLM-5.2 is the ideal choice for software engineering workflows and coding assistants. It features a massive 1-million-token context window capable of ingesting an entire repository, elite performance on SWE-bench Pro, and a fully permissive MIT license that ensures zero legal friction as your product scales.

Which model offers the lowest cost for high-volume enterprise document processing?

Gemma 4 31B provides the most economical token pricing on the list (roughly ₹8.6 per million input tokens and ₹33 per million output tokens). Combined with native multimodal input and a 256K context window, it is purpose-built for high-volume pipelines like invoice processing and contract review.

What makes Llama 4 Scout uniquely suited for RAG systems?

Llama 4 Scout boasts an industry-leading 10-million-token context window with near-perfect retrieval accuracy in needle-in-haystack evaluations. This allows engineering teams to drop massive document archives or multi-year user histories directly into context, eliminating the complexity of traditional chunking and retrieval pipelines.

Which model should Indian engineering teams use for multilingual voice AI and regional languages?

Qwen 3.5 27B is the definitive default for voice and chat applications operating beyond English. It features explicit native support across 201 languages and dialects (including Hindi, Tamil, Bengali, and Marathi) and utilizes a dense architecture that delivers predictable, low-latency per-token generation required for real-time voice.

Are there any hidden license risks with these open-weight models?

While GLM-5.2, Gemma 4, and Qwen 3.5 use fully permissive MIT or Apache 2.0 licenses with no restrictions or user caps, Meta's Llama 4 Scout operates under a custom community license. It includes a 700 million monthly active user (MAU) cap, mandatory "Built with Llama" attribution, and naming clauses that require a brief legal review before scaled commercial deployment.

How can we deploy multiple models without managing separate GPU clusters?

You can utilize a serverless infrastructure platform like Simplismart, which hosts a broad catalog of open-weight models on autoscaling, scale-to-zero endpoints. This allows engineering teams to route different tasks, such as voice, coding, documents, and RAG, to the specific model designed for the job, eliminating underlying hardware management overhead.

Ready to Deploy the Right Model for Every Workload?
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