DeepSeek V4 Flash 0731 vs Qwen/Qwen3-235B-A22B-Instruct-2507-FP8

Practical read: DeepSeek V4 Flash 0731 reads four times more context. One API key runs both.

One key routes both. Starter credit covers your first DeepSeek V4 Flash 0731 requests, while Qwen/Qwen3-235B-A22B-Instruct-2507-FP8 runs on your own provider key. Switch by changing the model name.

Side by side:

DeepSeek: DeepSeek V4 Flash 0731 compared with Qwen/Qwen3-235B-A22B-Instruct-2507-FP8
Attribute	DeepSeek V4 Flash 0731 `deepseek/deepseek-v4-flash-0731`	Qwen/Qwen3-235B-A22B-Instruct-2507-FP8 `qwen/qwen3-235b-a22b-instruct-2507-fp8`
Price, 1M in + out	$0.14 Engy, cheapest route	$1.85 Your provider key
Best for	Long documents
Cached input	$0.01/1M to $0.098201/1M	Not published
Context window	1.05M 1,048,576 tokens	262K 262,144 tokens
First token, p50	0.86 s via Sail Research	Measuring
Throughput	99 tok/s via NextBit	Measuring
Provider routes	24 with failover	0
Privacy	Confidential E2EE and zero retention route	Varies by provider
Recent route uptime range	0.00% to 100.00%	not enough data
Publisher	DeepSeek	Alibaba Cloud Model Studio
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 Flash 0731 and Qwen/Qwen3-235B-A22B-Instruct-2507-FP8 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-flash-0731, then on qwen/qwen3-235b-a22b-instruct-2507-fp8.
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-flash-0731", "qwen/qwen3-235b-a22b-instruct-2507-fp8"):
    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-flash-0731 qwen/qwen3-235b-a22b-instruct-2507-fp8; 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 Flash 0731 or Qwen/Qwen3-235B-A22B-Instruct-2507-FP8?

DeepSeek V4 Flash 0731 has more Credits provider routes and the larger context window. A published Credits price comparison is not available for both models. There is not enough recent probe data to compare speed.

Is DeepSeek: DeepSeek V4 Flash 0731 or Qwen/Qwen3-235B-A22B-Instruct-2507-FP8 cheaper?

The current cheapest TrustedRouter route is $0.142425/1M for DeepSeek: DeepSeek V4 Flash 0731 and $1.84625/1M for Qwen/Qwen3-235B-A22B-Instruct-2507-FP8. The comparison uses current catalog prices and updates as provider pricing changes.

Is DeepSeek: DeepSeek V4 Flash 0731 or Qwen/Qwen3-235B-A22B-Instruct-2507-FP8 faster?

Current measured p50 time to first token is 860 ms for DeepSeek: DeepSeek V4 Flash 0731 and not enough data for Qwen/Qwen3-235B-A22B-Instruct-2507-FP8. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test DeepSeek: DeepSeek V4 Flash 0731 and Qwen/Qwen3-235B-A22B-Instruct-2507-FP8 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-flash-0731 and qwen/qwen3-235b-a22b-instruct-2507-fp8. This makes side-by-side evals possible without maintaining two provider integrations.

More comparisons

All comparisons

Try DeepSeek V4 Flash 0731 and Qwen/Qwen3-235B-A22B-Instruct-2507-FP8 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.

One key routes both. Starter credit covers your first DeepSeek V4 Flash 0731 requests, while Qwen/Qwen3-235B-A22B-Instruct-2507-FP8 runs on your own provider key. Switch by changing the model name.