As of August 25, 2026, Qwen3.5-9B is 99% cheaper per million tokens than GPT-4 Turbo. GPT-4 Turbo is $10.00 / $30.00 per million input/output tokens versus Qwen3.5-9B at $0.10 / $0.15. Sources: https://developers.openai.com/api/docs/pricing and https://openrouter.ai/api/v1/models
Sources: OpenAI API pricing (https://developers.openai.com/api/docs/pricing); OpenRouter pricing (https://openrouter.ai/api/v1/models)
GPT-4 Turbo
OpenAI
Input
$10.00
Output
$30.00
Qwen3.5-9B
Qwen
Input
$0.10
Output
$0.15
Token pricing, specs, and benchmarks side by side
Each bar is share of the current leader on that eval. Click a row to open the board.
GPQA. Left is cheaper. Up is a higher score. The line is the best score you can buy at each price.
GPT-4 TurboQwen3.5-9BVerdict
Qwen3.5-9B offers both lower pricing and stronger benchmark performance across the board, making it the clear value leader in this comparison.
As of August 25, 2026, Qwen3.5-9B is 99% cheaper on blended LLM API pricing. Qwen3.5-9B costs $0.10 per million input tokens and $0.15 per million output tokens ($0.25 blended 1M-in + 1M-out). GPT-4 Turbo costs $10.00 / $30.00 per million tokens ($40.00 blended). Sources: https://developers.openai.com/api/docs/pricing and https://openrouter.ai/api/v1/models. The cheapest LLM for your app still depends on how many output tokens you generate.
GPT-4 Turbo OpenAI API pricing is $10.00 input and $30.00 output per million tokens via OpenAI. Qwen3.5-9B OpenRouter API pricing is $0.10 input and $0.15 output per million tokens via OpenRouter. Use those four numbers, not ChatGPT Plus or Claude Pro subscription prices, when you are comparing APIs.
GPT-4 Turbo has a published HumanEval score of 87.1%. Qwen3.5-9B does not have that eval on this page yet.
GPT-4 Turbo supports a 128K token context window, while Qwen3.5-9B supports 262K tokens. Qwen3.5-9B offers a larger context window. Filling a larger window bills more input tokens, so the cheaper-per-million model can still cost more on long documents.
Qwen3.5-9B leads on 1 of 1 shared benchmarks versus GPT-4 Turbo's 0 wins. Check the comparison table for GPQA Diamond, SWE-bench, MMLU, HLE, and the other evals we track. Token price and benchmark score together are the usual LLM comparison, not either number alone.
Both GPT-4 Turbo and Qwen3.5-9B are production API models. For cost-sensitive production traffic, Qwen3.5-9B has better economics on the blended 1M-in + 1M-out scale. For maximum capability, weight the benchmark table for your domain. Many production stacks route cheap models for drafts and a frontier model for the hard turn, which is usually cheaper than sending everything to the expensive API.
Yes. Call GPT-4 Turbo through OpenAI and Qwen3.5-9B through OpenRouter with separate API keys, or through a gateway that already wraps both. Keep prompts in tokens, not characters, when you estimate the invoice. AnotherWrapper templates can swap providers without rewriting auth and billing.
List rates are the latest published OpenAI API pricing and OpenRouter API pricing, quoted per million tokens. Official rate sheets: https://developers.openai.com/api/docs/pricing and https://openrouter.ai/api/v1/models. Prompt caching, batch APIs, and committed-use discounts can change the invoice. Benchmark scores are from official publications and independent evals, updated as new numbers land.
GPT-4 Turbo supports up to 4K output tokens per request, while Qwen3.5-9B supports up to an unspecified number of output tokens. Output tokens are usually the expensive half of API pricing, so a higher max output cap is a capability, not a discount.
GPT-4 Turbo has a measured throughput of approximately 100 tokens/second. Throughput data for Qwen3.5-9B is not yet available. Throughput (tokens per second) and time-to-first-token are why two models with the same per-million-token price can still feel different in chat and agents.
Use the model pickers at the top of this LLM comparison. Search any model in the index and the URL updates. Open GPT-4 Turbo or Qwen3.5-9B from the sidebar for the single-model API pricing page, or go back to the LLM pricing table to sort by cheapest blended cost.
This comparison covers API pricing, context window, throughput, and benchmark scores. GPT-4 Turbo costs $10.00/M input and $30.00/M output. Qwen3.5-9B costs $0.10/M input and $0.15/M output via OpenRouter.
Rank both on the LLM leaderboard, SWE-bench, and Humanity's Last Exam.
The index
280 models across 33 providers. Search or jump to a lab — every model page stays linked here.
Next step
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