SpaceXAI: Grok 4.5

x-ai/grok-4.5 · xAINot yet established

Declared family: Grok
Evidence confidence: Unknown
Declared tokenizer tag: Grok
Entered catalogue: 8 July 2026
Last tested: Not yet measured
Measurement: Awaiting measurement

Evidence stack

Signals of different kinds, weighed together

Signal	Result	Reference
Tokenizer signature	Not measured	–
API surface	No other entry shares this exact contract	api_359e1c8b
Context and output	500,000 context · – max output	declared
Reasoning contract	Mandatory · efforts high, medium, low · default high	declared
Serving providers observed	None recorded yet	–

Declared record

What the catalogue claims about this model

Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.

Modalities: text+image+file->text
Declared tokenizer: Grok
Prompt price: $2.00 / M tokens
Completion price: $6.00 / M tokens

Supported parameters

include_reasoninglogprobsmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_logprobstop_p

defaults: {}

Catalogue entry

History

Every observation, kept as taken

8 July 2026Enters the OpenRouter catalogue declared as Grok.

Cite this page as the evidence record for SpaceXAI: Grok 4.5: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings. The raw data behind every figure is on the data page.