Compare

Deepseek-V4.1-Flash-1017 vs GPT-5.5 Pro

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 2 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

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Deepseek-V4.1-Flash-1017
deepseek/deepseek-v4.1-flash-1017
GPT-5.5 Pro
openai/gpt-5.5-pro
Provider
Deepseek
OpenAI
Family
DeepSeek
GPT-5
Modality
text
text
Context window
1,048,576 tok
1,000,000 tok
Max output
32,768 tok
16,384 tok
Released
2026-10-17
2026-05-22
License
Open-weight
Proprietary
Input price
$0.300 /1M
$30.00 /1M
Output price
$1.20 /1M
$180.00 /1M
Tools
yes
yes
Streaming
yes
yes
Vision
yes
yes
JSON mode
yes
yes
Reasoning
yes
yes
Prompt caching
—
—
Batch API
—
—
Try it
Open in playground →
Open in playground →
Deepseek-V4.1-Flash-1017
deepseek/deepseek-v4.1-flash-1017
Full spec →

We introduce DeepSeek-V4.1-Flash, a multimodal Mixture-of-Experts (MoE) model with 552B backbone parameters and support for contexts of up to one million tokens. The model natively processes images and text, and generates text autoregressively.

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows
GPT-5.5 Pro
openai/gpt-5.5-pro
Full spec →

GPT-5.5 pro uses OpenAI's Responses API with built-in tools, improved reasoning, and stateful context management.

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows

Compare with another

Gemini 4 Argon vs Deepseek-V4.1-Flash-1017
google/gemini-4-argon · deepseek/deepseek-v4.1-flash-1017
Gemini 4 Argon vs GPT-5.5 Pro
google/gemini-4-argon · openai/gpt-5.5-pro
Claude Opus 5.5 vs Deepseek-V4.1-Flash-1017
anthropic/claude-opus-5.5 · deepseek/deepseek-v4.1-flash-1017
Claude Opus 5.5 vs GPT-5.5 Pro
anthropic/claude-opus-5.5 · openai/gpt-5.5-pro
Claude Sonnet 5.5 vs Deepseek-V4.1-Flash-1017
anthropic/claude-sonnet-5.5 · deepseek/deepseek-v4.1-flash-1017
Claude Sonnet 5.5 vs GPT-5.5 Pro
anthropic/claude-sonnet-5.5 · openai/gpt-5.5-pro
Deepseek-V4.1-Flash-1017 vs Grok 4.7
deepseek/deepseek-v4.1-flash-1017 · xai/grok-4.7
Deepseek-V4.1-Flash-1017 vs MiniMax M3.1 Flash
deepseek/deepseek-v4.1-flash-1017 · minimax/m3.1-flash
Deepseek-V4.1-Flash-1017 vs Decisions
deepseek/deepseek-v4.1-flash-1017 · openai/decisions
SWITCH BETWEEN THEM

One key, all 2, one line different.

from openai import OpenAI

client = OpenAI(
    base_url="https://api.aigateway.sh/v1",
    api_key="sk-aig-...",
)

# Deepseek-V4.1-Flash-1017
client.chat.completions.create(
    model="deepseek/deepseek-v4.1-flash-1017",
    messages=[{"role":"user","content":"hello"}],
)

# GPT-5.5 Pro
client.chat.completions.create(
    model="openai/gpt-5.5-pro",
    messages=[{"role":"user","content":"hello"}],
)
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