Model Comparison

GLM-4.5-Air vs Jamba 1.5 LargeWhich is better in 2026?

GLM-4.5-Air significantly outperforms across most benchmarks.

Verdict: GLM-4.5-Air vs Jamba 1.5 Large — which is better?

GLM-4.5-Air (by Zhipu AI) and Jamba 1.5 Large (by AI21 Labs) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

GLM-4.5-Air outperforms in 2 benchmarks (GPQA, MMLU-Pro), while Jamba 1.5 Large is better at 0 benchmarks. GLM-4.5-Air significantly outperforms across most benchmarks.

Choose GLM-4.5-Air if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
  • you want the most recent training data — it shipped Jul 2025

Choose Jamba 1.5 Large if…

  • you want predictable pricing at $2.00/M input and $8.00/M output

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

GLM-4.5-Air outperforms in 2 benchmarks (GPQA, MMLU-Pro), while Jamba 1.5 Large is better at 0 benchmarks.

GLM-4.5-Air significantly outperforms across most benchmarks.

Tue Jul 21 2026 • llm-stats.com

Arena Performance

Human preference votes

Model Size

Parameter count comparison

292.0B diff

Jamba 1.5 Large has 292.0B more parameters than GLM-4.5-Air, making it 275.5% larger.

Zhipu AI
GLM-4.5-Air
106.0Bparameters
AI21 Labs
Jamba 1.5 Large
398.0Bparameters
106.0B
GLM-4.5-Air
398.0B
Jamba 1.5 Large

Context Window

Maximum input and output token capacity

Only Jamba 1.5 Large specifies input context (256,000 tokens). Only Jamba 1.5 Large specifies output context (256,000 tokens).

Zhipu AI
GLM-4.5-Air
Input- tokens
Output- tokens
AI21 Labs
Jamba 1.5 Large
Input256,000 tokens
Output256,000 tokens
Tue Jul 21 2026 • llm-stats.com

License

Usage and distribution terms

GLM-4.5-Air is licensed under MIT, while Jamba 1.5 Large uses Jamba Open Model License.

License differences may affect how you can use these models in commercial or open-source projects.

GLM-4.5-Air

MIT

Open weights

Jamba 1.5 Large

Jamba Open Model License

Open weights

Release Timeline

When each model was launched

GLM-4.5-Air was released on 2025-07-28, while Jamba 1.5 Large was released on 2024-08-22.

GLM-4.5-Air is 11 months newer than Jamba 1.5 Large.

GLM-4.5-Air

Jul 28, 2025

11 months ago

11mo newer
Jamba 1.5 Large

Aug 22, 2024

1.9 years ago

Knowledge Cutoff

When training data ends

Jamba 1.5 Large has a documented knowledge cutoff of 2024-03-05, while GLM-4.5-Air's cutoff date is not specified.

We can confirm Jamba 1.5 Large's training data extends to 2024-03-05, but cannot make a direct comparison without GLM-4.5-Air's cutoff date.

GLM-4.5-Air

—

Jamba 1.5 Large

Mar 2024

Outputs Comparison

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Key Takeaways

Zhipu AI
Higher GPQA score (75.0% vs 36.9%)
Higher MMLU-Pro score (81.4% vs 53.5%)
AI21 Labs
Larger context window (256,000 tokens)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against GLM-4.5-Air and Jamba 1.5 Large side-by-side, then vote on the output you prefer.

GLM-4.5-Air
✓ Preferred
Jamba 1.5 Large
Open in Playground
AI Model Comparison Table
Feature
Zhipu AI
GLM-4.5-Air
AI21 Labs
Jamba 1.5 Large

FAQ

Common questions about GLM-4.5-Air vs Jamba 1.5 Large.

Which is better, GLM-4.5-Air or Jamba 1.5 Large?

GLM-4.5-Air significantly outperforms across most benchmarks. GLM-4.5-Air is made by Zhipu AI and Jamba 1.5 Large is made by AI21 Labs. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GLM-4.5-Air compare to Jamba 1.5 Large in benchmarks?

GLM-4.5-Air scores MATH-500: 98.1%, AIME 2024: 89.4%, MMLU-Pro: 81.4%, TAU-bench Retail: 77.9%, BFCL-v3: 76.4%. Jamba 1.5 Large scores ARC-C: 93.0%, GSM8k: 87.0%, MMLU: 81.2%, Arena Hard: 65.4%, TruthfulQA: 58.3%.

What are the context window sizes for GLM-4.5-Air and Jamba 1.5 Large?

GLM-4.5-Air supports an unknown number of tokens and Jamba 1.5 Large supports 256K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GLM-4.5-Air and Jamba 1.5 Large?

Key differences include licensing (MIT vs Jamba Open Model License). See the full comparison above for benchmark-by-benchmark results.

Who makes GLM-4.5-Air and Jamba 1.5 Large?

GLM-4.5-Air is developed by Zhipu AI and Jamba 1.5 Large is developed by AI21 Labs.

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