xAI model announcements from November 2023 to September 2026, newest first. Compare what changed and follow the official sources.
Dates refer to the linked announcement or release milestone. Previews are labeled in the entries; historical availability and pricing may have changed.
xAI released Grok 4.7, a coding and knowledge-work model listed at the same API price as Grok 4.6: $2 per million input tokens and $6 per million output tokens. It is available in Cursor, Grok Build, and the xAI API.
For buildersRun a long coding or document task on Grok 4.7 in Cursor or the API at Grok 4.6 pricing and compare quality with the model you currently use.
xAI released Grok Voice Transcribe 2.0, a speech-to-text model available through its Speech-to-Text API for batch and streaming transcription. Company-listed pricing is unchanged from version 1.0: $0.10 per hour of audio for batch and $0.20 per hour for streaming.
For buildersSend a noisy support call or meeting recording through the Speech-to-Text API and compare speaker labels, timestamps, and formatted emails or phone numbers against your current transcriber.
Grok 4.6 introduced improvements for longer-running agents and interactive visual work.
For buildersTest an agent on both the implementation and the rendered result of an interface change.
Grok 4.5 launched for coding, agentic tasks, and knowledge work, including API access.
For buildersUse realistic engineering tasks to compare completion quality and total token use.
xAI released a fast model for tool-using agents, alongside its Agent Tools API.
For buildersMeasure the latency of the whole tool workflow, not just the first generated token.
An updated Grok model focused on conversational quality, nuanced instructions, and collaborative interactions.
For buildersEvaluate tone and instruction following using the conversations your users actually have.
Grok 4 launched with reasoning, native tool use, and real-time search integration; Heavy provided a higher-compute option.
For buildersGround current-information tasks in retrieved sources and verify the resulting citations.
xAI detailed its Grok 3 beta models and their reasoning capabilities, including a smaller reasoning model.
For buildersCompare general knowledge tasks with focused mathematical reasoning.
xAI introduced a new model generation with improved text and visual understanding.
For buildersCompare general conversation and image understanding as separate capabilities.
xAI announced Grok-1.5 with improved reasoning and a 128K context window ahead of early-user rollout.
For buildersCompare long-document tasks with the preceding Grok generation.
xAI announced the Grok-1 language model powering the early Grok beta.
For buildersA historical starting point for the Grok family of conversational models.