xAI

Browse models provided by xAI (Terms of Service)

4 models

Tokens processed on OpenRouter

xAI: Grok Voice TTS 1.0Grok Voice TTS 1.0
Grok Voice TTS 1.0 is a text-to-speech model from xAI. It converts text into spoken audio across 20+ languages with automatic language detection, and offers five built-in voices (Eve, Ara, Rex, Sal, Leo) covering a range of tones. Inline speech tags allow control over pauses, emphasis, pitch, speed, and vocal style. Output is available in MP3, WAV, PCM, μ-law, and A-law formats at sample rates from 8 kHz to 48 kHz, with up to 15,000 characters per request.
by x-aiMay 15, 202615K context$15 per 1M characters

xAI

Browse models provided by xAI (Terms of Service)

4 models

Tokens processed on OpenRouter

xAI: Grok Voice TTS 1.0Grok Voice TTS 1.0
Grok Voice TTS 1.0 is a text-to-speech model from xAI. It converts text into spoken audio across 20+ languages with automatic language detection, and offers five built-in voices (Eve, Ara, Rex, Sal, Leo) covering a range of tones. Inline speech tags allow control over pauses, emphasis, pitch, speed, and vocal style. Output is available in MP3, WAV, PCM, μ-law, and A-law formats at sample rates from 8 kHz to 48 kHz, with up to 15,000 characters per request.
by x-aiMay 15, 202615K context$15 per 1M characters

xAI: Grok 4.3Grok 4.3

Grok 4.3 is a reasoning model from xAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual accuracy. Reasoning can be configured between none/low/medium/high (default low) effort levels. It supports a 1 million token context window with no output token limit, making it well-suited for long-document analysis, deep research, and multi-step agentic tasks. Pricing is tiered: requests exceeding 200k total tokens are billed at a higher rate.

by x-aiApr 30, 20261M context$1.25 /M input tokens$2.50 /M output tokens

xAI: Grok 4.20 Multi-AgentGrok 4.20 Multi-Agent

Grok 4.20 Multi-Agent is a variant of xAI’s Grok 4.20 designed for collaborative, agent-based workflows. Multiple agents operate in parallel to conduct deep research, coordinate tool use, and synthesize information across complex tasks. Reasoning effort behavior: - low / medium: 4 agents - high / xhigh: 16 agents

by x-aiMar 31, 20262M context$2 /M input tokens$6 /M output tokens

xAI: Grok 4.20Grok 4.20

Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses. Reasoning can be enabled/disabled using the `reasoning` `enabled` parameter in the API. [Learn more in our docs](https://openrouter.ai/docs/use-cases/reasoning-tokens#controlling-reasoning-tokens)

by x-aiMar 31, 20262M context$1.25 /M input tokens$2.50 /M output tokens