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GPT 3.5 Turbo Instruct vs DeepSeek V4.1 Flash 1017

At a glance

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

4K ctx$1.50/$2.00 per M

DeepSeek's October 2026 checkpoint of the V4.1 Flash workhorse, refreshed for stronger agentic coding with shorter, faster answers.

1.0M ctx$0.15/$0.60 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 2026-10-02
Agentic
Task Horizon1min
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper84%
Agentic
Task Horizon—
Specs
4K
Context
4K
Max output
Sep 2023
Released
1.0M
Context
256K
Max output
Oct 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
Input90%$0.15/M tokens
Output70%$0.60/M tokens
Cache read$0.003/M tokens
Chat with GPT 3.5 Turbo InstructGo to model
Chat with DeepSeek V4.1 Flash 1017Go to model
Frequently Asked Questions: GPT 3.5 Turbo Instruct vs DeepSeek V4.1 Flash 1017▼

Which is better, GPT 3.5 Turbo Instruct or DeepSeek V4.1 Flash 1017?

▼

Both GPT 3.5 Turbo Instruct and DeepSeek V4.1 Flash 1017 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 DeepSeek V4.1 Flash 1017?

▼

DeepSeek V4.1 Flash 1017 has a lower blended cost. GPT 3.5 Turbo Instruct: $1.50 input / $2.00 output. DeepSeek V4.1 Flash 1017: $0.15 input / $0.60 output.

Which has a larger context window, GPT 3.5 Turbo Instruct or DeepSeek V4.1 Flash 1017?

▼

DeepSeek V4.1 Flash 1017 has a larger context window: GPT 3.5 Turbo Instruct supports 4K tokens vs DeepSeek V4.1 Flash 1017 at 1M tokens.

Do both GPT 3.5 Turbo Instruct and DeepSeek V4.1 Flash 1017 support vision?

▼

DeepSeek V4.1 Flash 1017 supports vision/image input, but GPT 3.5 Turbo Instruct does not.

What are the key differences between GPT 3.5 Turbo Instruct and DeepSeek V4.1 Flash 1017?

▼

Key differences: DeepSeek V4.1 Flash 1017 is significantly cheaper; only DeepSeek V4.1 Flash 1017 supports vision input; only DeepSeek V4.1 Flash 1017 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 DeepSeek V4.1 Flash 1017 for free on idapt.app to see which performs better for your specific needs.

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