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GPT 3.5 Turbo Instruct vs GLM 5.3 Flash

At a glance

Instruction-following variant of GPT-3.5 for completion-style tasks.

4K ctx$1.50/$2.00 per M

Z.ai's efficient multimodal model for fast coding and long-horizon agent tasks.

1.0M ctx$0.07/$0.25 per M
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-07-10
Agentic
Task Horizon1min
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper93%
Agentic
Task Horizon—
Specs
4K
Context
4K
Max output
Sep 2023
Released
1.0M
Context
131K
Max output
Aug 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$1.50/M tokens
Output$2.00/M tokens
Live pricing, shown before you run
Input95%$0.07/M tokens
Output88%$0.25/M tokens
Cache read$0.01/M tokens
Chat with GPT 3.5 Turbo InstructGo to model
Chat with GLM 5.3 FlashGo to model
Frequently Asked Questions: GPT 3.5 Turbo Instruct vs GLM 5.3 Flash▼

Which is better, GPT 3.5 Turbo Instruct or GLM 5.3 Flash?

▼

Both GPT 3.5 Turbo Instruct and GLM 5.3 Flash are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, GPT 3.5 Turbo Instruct or GLM 5.3 Flash?

▼

GLM 5.3 Flash has a lower blended cost. GPT 3.5 Turbo Instruct: $1.50 input / $2.00 output. GLM 5.3 Flash: $0.07 input / $0.25 output.

Which has a larger context window, GPT 3.5 Turbo Instruct or GLM 5.3 Flash?

▼

GLM 5.3 Flash has a larger context window: GPT 3.5 Turbo Instruct supports 4K tokens vs GLM 5.3 Flash at 1M tokens.

Do both GPT 3.5 Turbo Instruct and GLM 5.3 Flash support vision?

▼

GLM 5.3 Flash supports vision/image input, but GPT 3.5 Turbo Instruct does not.

What are the key differences between GPT 3.5 Turbo Instruct and GLM 5.3 Flash?

▼

Key differences: GLM 5.3 Flash is significantly cheaper; only GLM 5.3 Flash supports vision input; only GLM 5.3 Flash offers extended reasoning mode. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both GPT 3.5 Turbo Instruct and GLM 5.3 Flash for free on idapt.app to see which performs better for your specific needs.

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