Which is cheaper, GPT-4 Turbo or Grok Code Fast 1?
As of August 22, 2026, Grok Code Fast 1 is 96% cheaper on blended LLM API pricing. Grok Code Fast 1 costs $0.20 per million input tokens and $1.50 per million output tokens ($1.70 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://docs.x.ai/docs/models. The cheapest LLM for your app still depends on how many output tokens you generate.
How much does GPT-4 Turbo vs Grok Code Fast 1 cost per million tokens?
GPT-4 Turbo OpenAI API pricing is $10.00 input and $30.00 output per million tokens via OpenAI. Grok Code Fast 1 xAI API pricing is $0.20 input and $1.50 output per million tokens via xAI. Use those four numbers, not ChatGPT Plus or Claude Pro subscription prices, when you are comparing APIs.
Which is better for coding, GPT-4 Turbo or Grok Code Fast 1?
Grok Code Fast 1 has a published SWE-bench Verified score of 70.8%. GPT-4 Turbo does not have that eval on this page yet.
What is the context window for GPT-4 Turbo vs Grok Code Fast 1?
GPT-4 Turbo supports a 128K token context window, while Grok Code Fast 1 supports 256K tokens. Grok Code Fast 1 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.
Which model performs better on benchmarks, GPT-4 Turbo or Grok Code Fast 1?
Shared benchmark scores for GPT-4 Turbo and Grok Code Fast 1 are still limited. Check the comparison table for the evals each model has published. 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.
Is GPT-4 Turbo or Grok Code Fast 1 better for production use?
Both GPT-4 Turbo and Grok Code Fast 1 are production API models. For cost-sensitive production traffic, Grok Code Fast 1 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.
Can I switch between GPT-4 Turbo and Grok Code Fast 1 in my app?
Yes. Call GPT-4 Turbo through OpenAI and Grok Code Fast 1 through xAI 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.
How accurate is this GPT-4 Turbo vs Grok Code Fast 1 pricing data?
List rates are the latest published OpenAI API pricing and xAI API pricing, quoted per million tokens. Official rate sheets: https://developers.openai.com/api/docs/pricing and https://docs.x.ai/docs/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.
What is the output token limit for GPT-4 Turbo and Grok Code Fast 1?
GPT-4 Turbo supports up to 4K output tokens per request, while Grok Code Fast 1 supports up to 10K output tokens. Output tokens are usually the expensive half of API pricing, so a higher max output cap is a capability, not a discount.
Which model has better throughput, GPT-4 Turbo or Grok Code Fast 1?
GPT-4 Turbo runs at approximately 100 tokens/second while Grok Code Fast 1 runs at 76.41 tokens/second. GPT-4 Turbo is faster in raw throughput. 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.
How do I switch the models in this GPT-4 Turbo vs Grok Code Fast 1 comparison?
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 Grok Code Fast 1 from the sidebar for the single-model API pricing page, or go back to the LLM pricing table to sort by cheapest blended cost.
