2025-09-23 New and Updated Models

[tensornull]

2025-09-23

New and Updated Models：

grok-4-fast-non-reasoning
grok-4-fast-reasoning
grok-code-fast-1

• grok-4-fast-non-reasoning: The non-reasoning variant of xAI's Grok-4 Fast series, with a unified architecture for handling fast responses, suitable for real-time search and simple queries. It possesses extremely powerful technical parameters and ecosystem capabilities: context window supports up to 2,000,000 tokens, cost-efficient (input $0.20/million tokens), leading mainstream models.

• grok-4-fast-reasoning: The reasoning variant of xAI's Grok-4 Fast series, supporting long-chain thinking and tool calls, suitable for complex tasks such as mathematical reasoning and agent workflows. Ranked first in the LMArena search arena (1163 Elo), it possesses extremely powerful technical parameters and ecosystem capabilities: context window supports up to 2,000,000 tokens, leading mainstream models.

• grok-code-fast-1: xAI's fast model specifically designed for agent coding, optimized for tool integration such as grep and file editing, achieving 70.8% performance on SWE-Bench-Verified, suitable for automated code generation and debugging. Currently supports text modality, with vision and other features coming soon. It possesses extremely powerful technical parameters and ecosystem capabilities: context window supports up to 256,000 tokens, leading coding-specific models.

Follows the OpenAI chat standard format, see details: CometAPI Chat Documentation