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GPT 5.1 Codex Mini vs DeepSeek V4.1 Flash 1017

At a glance

Compact coding model for fast, cost-efficient development tasks.

400K ctx$0.25/$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
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-10-02
Agentic
Terminal Tasks61.6%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper62%
Agentic
Terminal Tasks—
Specs
400K
Context
128K
Max output
Nov 2025
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$0.25/M tokens
Output$2.00/M tokens
Cache read$0.03/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input40%$0.15/M tokens
Output70%$0.60/M tokens
Cache read90%$0.003/M tokens
Chat with GPT 5.1 Codex MiniGo to model
Chat with DeepSeek V4.1 Flash 1017Go to model
Frequently Asked Questions: GPT 5.1 Codex Mini vs DeepSeek V4.1 Flash 1017▼

Which is better, GPT 5.1 Codex Mini or DeepSeek V4.1 Flash 1017?

▼

Both GPT 5.1 Codex Mini 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 5.1 Codex Mini or DeepSeek V4.1 Flash 1017?

▼

DeepSeek V4.1 Flash 1017 has a lower blended cost. GPT 5.1 Codex Mini: $0.25 input / $2.00 output. DeepSeek V4.1 Flash 1017: $0.15 input / $0.60 output.

Which has a larger context window, GPT 5.1 Codex Mini or DeepSeek V4.1 Flash 1017?

▼

DeepSeek V4.1 Flash 1017 has a larger context window: GPT 5.1 Codex Mini supports 400K tokens vs DeepSeek V4.1 Flash 1017 at 1M tokens.

Do both GPT 5.1 Codex Mini and DeepSeek V4.1 Flash 1017 support vision?

▼

Yes, both GPT 5.1 Codex Mini and DeepSeek V4.1 Flash 1017 support vision/image input.

What are the key differences between GPT 5.1 Codex Mini and DeepSeek V4.1 Flash 1017?

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GPT 5.1 Codex Mini and DeepSeek V4.1 Flash 1017 have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.

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 5.1 Codex Mini and DeepSeek V4.1 Flash 1017 for free on idapt.app to see which performs better for your specific needs.

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