tbuy
grok-4-fast-non-reasoning API pricing & access
grok-4-fast-non-reasoning API pricing: $0.2 per 1M tokens. grok-4-fast-non-reasoning. Listed specifications follow public vendor documentation. Avail…
grok-4-fast-non-reasoning API access
grok-4-fast-non-reasoning. Listed specifications follow public vendor documentation. Available features and limits depend on the selected serving channel.
Compare supported API endpoints and capabilities, then access grok-4-fast-non-reasoning through the unified API gateway.
- Category
- text
- Context length
- 2000000 tokens
- Supported APIs
- OpenAI Chat Completions API, OpenAI Responses API, Anthropic Messages API
- API endpoints
- POST /v1/chat/completions, POST /v1/responses, POST /v1/messages
- Capabilities
- function calling
grok-4-fast-non-reasoning API pricing
- Base input price
- $0.2 per 1M tokens
- Base output price
- $0.5 per 1M tokens
Base prices are shown in USD before group-specific adjustments. Open the live pricing page for current access-group prices.
About grok-4-fast-non-reasoning
grok-4-fast-non-reasoning is a retained historical Grok catalog name. The vendor marks this slug retired and redirects its own API requests to Grok 4.3; retaining the name does not preserve the original model.
This describes the vendor API; confirm the selected platform route separately. Compare the served version, complete responses and usage before migration. Official reference, checked 2026-10-14.
Use cases and prompting
- Inventory old requests, output formats and tool schemas to identify historical behavior dependencies.
- Test successful output, refusals, tool errors and streaming completion, retaining full responses.
- Require served-version evidence for historical reproduction; an unpinned response cannot establish version equivalence.
- Compare identical cases with grok-4.3; record complete outputs, failures and actual usage. See the API documentation for integration.
How to call grok-4-fast-non-reasoning
grok-4-fast-non-reasoning is served through tbuy's unified gateway. Existing OpenAI or Anthropic SDK code keeps working: point base_url at https://modelsok.com and use your tbuy API key.
curl (OpenAI-compatible)
curl https://modelsok.com/v1/chat/completions \
-H "Authorization: Bearer $API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "grok-4-fast-non-reasoning", "messages": [{"role": "user", "content": "Hello"}]}'Python (openai SDK)
from openai import OpenAI
client = OpenAI(base_url="https://modelsok.com/v1", api_key="YOUR_API_KEY")
response = client.chat.completions.create(
model="grok-4-fast-non-reasoning",
messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)Python (anthropic SDK)
from anthropic import Anthropic
client = Anthropic(base_url="https://modelsok.com", api_key="YOUR_API_KEY")
message = client.messages.create(
model="grok-4-fast-non-reasoning",
max_tokens=1024,
messages=[{"role": "user", "content": "Hello"}],
)
print(message.content[0].text)Related pages
Frequently asked questions about grok-4-fast-non-reasoning
What is grok-4-fast-non-reasoning?
grok-4-fast-non-reasoning. Listed specifications follow public vendor documentation. Available features and limits depend on the selected serving channel.
How do I call grok-4-fast-non-reasoning?
Create an API key with access to grok-4-fast-non-reasoning, then use the exact model ID and a supported endpoint from the API access section. Request fields depend on the selected endpoint.
How is grok-4-fast-non-reasoning priced?
Pricing depends on the selected provider group and the model billing unit. Refer to the current input, output, request, or media prices in the pricing section.
What is the context window of grok-4-fast-non-reasoning?
The model catalog lists a context window of 2000000 tokens. Check the selected endpoint for request limits.
How should I evaluate grok-4-fast-non-reasoning for my project?
Start with the use cases and prompting guidance on this page, then evaluate the model with representative inputs from your project.