DeepSeek V4.1 Flash 1017 vs GPT 6 Sol

Practical read: DeepSeek V4.1 Flash 1017 costs about a quarter as much. One API key runs both.

No card required. Start with 1 million free tokens.

Side by side:

DeepSeek: DeepSeek V4.1 Flash 1017 compared with GPT 6 Sol
Attribute	DeepSeek V4.1 Flash 1017 `deepseek/deepseek-v4.1-flash-1017`	GPT 6 Sol `openai/gpt-6-sol-codex`
Price, 1M in + out	$0.16 Engy, cheapest route	$0.63 Atlas Cloud, cheapest route
Best for	Low cost
Input / output, 1M	$0.032 / $0.13	$0.11 / $0.53
Cached input	$0.01/1M to $0.131875/1M	$0.01055/1M
Context window	1.05M 1,048,576 tokens	1.05M 1,050,000 tokens
First token, p50	0.52 s via Sail Research	Measuring
AI IQ	IQ 128 #19 on AI IQ	Unrated
Provider routes	19 with failover	1
Privacy	Confidential E2EE and zero retention route	Varies by provider
Recent route uptime range	99.31% to 100.00%	not enough data
Publisher	DeepSeek	OpenAI
Modes	chat	chat
More detail	Overview Pricing Providers	Overview

Price adds one million input and one million output tokens on the cheapest route. Prices and speed change: see the monthly reports and run a small eval before you choose a default.

Test both with your agent

Paste this into Claude Code, Cursor or any coding agent.

Compare DeepSeek V4.1 Flash 1017 and GPT 6 Sol in this project through TrustedRouter.

1. Read https://trustedrouter.com/docs/llms.txt
2. Point the OpenAI-compatible client at
   https://api.trustedrouter.com/v1 and read the key from
   TRUSTEDROUTER_API_KEY.
3. Run our eval prompts on deepseek/deepseek-v4.1-flash-1017, then on openai/gpt-6-sol-codex.
4. Show me cost, latency and quality side by side before changing the default.

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.trustedrouter.com/v1",
    api_key=os.environ["TRUSTEDROUTER_API_KEY"],
)
for model in ("deepseek/deepseek-v4.1-flash-1017", "openai/gpt-6-sol-codex"):
    response = client.chat.completions.create(
        model=model,
        messages=[{"role": "user", "content": "What is the capital of France?"}],
    )
    print(model, response.choices[0].message.content)

for model in deepseek/deepseek-v4.1-flash-1017 openai/gpt-6-sol-codex; do
  curl https://api.trustedrouter.com/v1/chat/completions \
    -H "Authorization: Bearer $TRUSTEDROUTER_API_KEY" \
    -H "Content-Type: application/json" \
    -d "{\"model\": \"$model\", \"messages\": [{\"role\": \"user\", \"content\": \"What is the capital of France?\"}]}"
done

Your agent will need an API key.

Questions

Which should I use, DeepSeek: DeepSeek V4.1 Flash 1017 or GPT 6 Sol?

DeepSeek V4.1 Flash 1017 has the lower published input-plus-output rate and more Credits provider routes. GPT 6 Sol has the larger context window. There is not enough recent probe data to compare speed.

Is DeepSeek: DeepSeek V4.1 Flash 1017 or GPT 6 Sol cheaper?

The current cheapest TrustedRouter route is $0.15825/1M for DeepSeek: DeepSeek V4.1 Flash 1017 and $0.633/1M for GPT 6 Sol. The comparison uses current catalog prices and updates as provider pricing changes.

Is DeepSeek: DeepSeek V4.1 Flash 1017 or GPT 6 Sol faster?

Current measured p50 time to first token is 521 ms for DeepSeek: DeepSeek V4.1 Flash 1017 and not enough data for GPT 6 Sol. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test DeepSeek: DeepSeek V4.1 Flash 1017 and GPT 6 Sol with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between deepseek/deepseek-v4.1-flash-1017 and openai/gpt-6-sol-codex. This makes side-by-side evals possible without maintaining two provider integrations.

More comparisons

All comparisons

Try DeepSeek V4.1 Flash 1017 and GPT 6 Sol with one key.

TrustedRouter is useful when you know the model you want, but still need provider rollover, budget limits, usage records, and a prompt path you can verify.

No card required. Start with 1 million free tokens.