Model Comparison

GLM-4.5V vs GPT-5.6 TerraWhich is better in 2026?

Comparing GLM-4.5V and GPT-5.6 Terra across benchmarks, pricing, and capabilities.

Verdict: GLM-4.5V vs GPT-5.6 Terra — which is better?

GLM-4.5V (by Zhipu AI) and GPT-5.6 Terra (by OpenAI) 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.

On price, GLM-4.5V is roughly 5.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-5.6 Terra also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose GLM-4.5V if…

  • cost matters — it's about 5.9x cheaper per token
  • you need open weights you can self-host or fine-tune

Choose GPT-5.6 Terra if…

  • you process long inputs — it offers a 1,050,000 token context window
  • you want the most recent training data — it shipped Jul 2026

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

GLM-4.5V and GPT-5.6 Terradon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GLM-4.5V costs less

For input processing, GLM-4.5V ($0.55/1M tokens) is 4.5x cheaper than GPT-5.6 Terra ($2.50/1M tokens).

For output processing, GLM-4.5V ($2.19/1M tokens) is 6.8x cheaper than GPT-5.6 Terra ($15.00/1M tokens).

In conclusion, GPT-5.6 Terra is more expensive than GLM-4.5V.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Sun Jul 26 2026 • llm-stats.com
Zhipu AI
GLM-4.5V
Input tokens$0.55
Output tokens$2.19
Best providerFireworks
OpenAI
GPT-5.6 Terra
Input tokens$2.50
Output tokens$15.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-5.6 Terra accepts 1,050,000 input tokens compared to GLM-4.5V's 131,072 tokens. GLM-4.5V can generate longer responses up to 131,072 tokens, while GPT-5.6 Terra is limited to 128,000 tokens.

Zhipu AI
GLM-4.5V
Input131,072 tokens
Output131,072 tokens
OpenAI
GPT-5.6 Terra
Input1,050,000 tokens
Output128,000 tokens
Sun Jul 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GLM-4.5V and GPT-5.6 Terra support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

GLM-4.5V

Text
Images
Audio
Video

GPT-5.6 Terra

Text
Images
Audio
Video

License

Usage and distribution terms

GLM-4.5V is licensed under MIT, while GPT-5.6 Terra uses a proprietary license.

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

GLM-4.5V

MIT

Open weights

GPT-5.6 Terra

Proprietary

Closed source

Release Timeline

When each model was launched

GLM-4.5V was released on 2025-08-11, while GPT-5.6 Terra was released on 2026-07-09.

GPT-5.6 Terra is 11 months newer than GLM-4.5V.

GLM-4.5V

Aug 11, 2025

11 months ago

GPT-5.6 Terra

Jul 9, 2026

2 weeks ago

11mo newer

Knowledge Cutoff

When training data ends

GPT-5.6 Terra has a documented knowledge cutoff of 2026-02-16, while GLM-4.5V's cutoff date is not specified.

We can confirm GPT-5.6 Terra's training data extends to 2026-02-16, but cannot make a direct comparison without GLM-4.5V's cutoff date.

GLM-4.5V

—

GPT-5.6 Terra

Feb 2026

Provider Availability

GLM-4.5V is available from Fireworks, Novita. GPT-5.6 Terra is available from OpenAI.

GLM-4.5V

fireworks logo
Fireworks
Input Price:Input: $0.55/1MOutput Price:Output: $2.19/1M
novita logo
Novita
Input Price:Input: $0.60/1MOutput Price:Output: $2.20/1M

GPT-5.6 Terra

openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $15.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Zhipu AI
Less expensive input tokens
Less expensive output tokens
Has open weights
OpenAI
Larger context window (1,050,000 tokens)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against GLM-4.5V and GPT-5.6 Terra side-by-side, then vote on the output you prefer.

GLM-4.5V
✓ Preferred
GPT-5.6 Terra
Open in Playground
AI Model Comparison Table
Feature
Zhipu AI
GLM-4.5V
OpenAI
GPT-5.6 Terra

FAQ

Common questions about GLM-4.5V vs GPT-5.6 Terra.

Which is better, GLM-4.5V or GPT-5.6 Terra?

GLM-4.5V (Zhipu AI) and GPT-5.6 Terra (OpenAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does GLM-4.5V compare to GPT-5.6 Terra in benchmarks?

GPT-5.6 Terra scores Connectors: 100.0%, HealthBench Consensus: 95.1%, Search and Function-Calling: 94.6%, GPQA: 92.9%, Capture-the-Flag Challenges (Internal): 91.8%.

Is GLM-4.5V cheaper than GPT-5.6 Terra?

GLM-4.5V is 4.5x cheaper for input tokens. GLM-4.5V costs $0.55/M input and $2.19/M output via fireworks. GPT-5.6 Terra costs $2.50/M input and $15.00/M output via openai.

What are the context window sizes for GLM-4.5V and GPT-5.6 Terra?

GLM-4.5V supports 131K tokens and GPT-5.6 Terra supports 1.1M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GLM-4.5V and GPT-5.6 Terra?

Key differences include context window (131K vs 1.1M), input pricing ($0.55 vs $2.50/M), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes GLM-4.5V and GPT-5.6 Terra?

GLM-4.5V is developed by Zhipu AI and GPT-5.6 Terra is developed by OpenAI.

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