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Overage / Compare / LLM APIs

Google Gemini API vs xAI API pricing

Verified 2026-10-24 (1 day ago)Source: Google Gemini API: ai.google.dev/gemini-api/docs/pricing, xAI API: docs.x.ai/docs/modelsVerified shows the older of the two.

Monthly cost at three volumes

Monthly cost of Google Gemini API and xAI API at three volumes and at your own
VolumeGoogle Gemini APIxAI API
small1M input, 200K output$0.18 / moGemini 2.5 Flash-Lite$3.20 / mogrok-4.7
growing50M input, 10M output$9 / moGemini 2.5 Flash-Lite$160 / mogrok-4.7
scale1B input, 200M output$180 / moGemini 2.5 Flash-Lite$3,200 / mogrok-4.7
your volumeset above$9 / moGemini 2.5 Flash-Lite$160 / mogrok-4.7

Each cell is the cheapest feasible plan, or the chosen model, at that volume, from the shared Overage cost function. "Cheapest model" only considers models with both an input and an output price listed. Volumes are example scenarios you can edit.

Cheapest model per service, USD per 1M tokens

Cheapest priced model of each service
ServiceCheapest modelInputOutputModels listed
Google Gemini APIGemini 2.5 Flash-Lite$0.10$0.4037
xAI APIgrok-4.7$2$61

Every model

Every model of both services, USD per 1M tokens
ModelServiceInputOutput
Gemini 2.5 Flash-LiteGoogle Gemini API$0.10$0.40
Gemini Embedding 2Google Gemini API$0.20unlisted
Gemini 3.1 Flash-LiteGoogle Gemini API$0.25$1.50
Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite)Google Gemini API$0.25$1.50
Gemini 3.5 Flash-LiteGoogle Gemini API$0.30$2.50
Gemini 3.8 Flash (Flex)Google Gemini API$0.375$1.875
Gemini 3.6 Flash (Flex)Google Gemini API$0.375$1.875
Gemini 3.1 Flash Image (Nano Banana 2)Google Gemini API$0.50$3
Gemini 3.8 Flash TTSGoogle Gemini API$0.50unlisted
Gemini 3.8 Flash-Lite TTSGoogle Gemini API$0.50unlisted
Gemini 3 Flash PreviewGoogle Gemini API$0.50$3
Gemini 2.5 Flash Native Audio (Live API)Google Gemini API$0.50$2
Gemini 2.5 Flash Preview TTSGoogle Gemini API$0.50unlisted
Gemini 3.8 Flash (Standard)Google Gemini API$0.75$3.75
Gemini 3.6 Flash (Standard)Google Gemini API$0.75$3.75
Gemini 3.8 LiveGoogle Gemini API$0.75$4.50
Gemini 3.8 Live Extended ThinkingGoogle Gemini API$0.75$4.50
Gemini 3.1 Flash Live PreviewGoogle Gemini API$0.75$4.50
Gemini 4 Argon (Flex)Google Gemini API$1$5
Gemini 3.1 Flash TTS PreviewGoogle Gemini API$1unlisted
Gemini 2.5 Pro Preview TTSGoogle Gemini API$1unlisted
Gemini Robotics ER 2 PreviewGoogle Gemini API$1$5
Gemini Robotics ER 2 Streaming PreviewGoogle Gemini API$1$5
Gemini 2.5 Pro (prompt <=200k tokens)Google Gemini API$1.25$10
Gemini 3.8 Flash (Priority)Google Gemini API$1.35$6.75
Gemini 3.6 Flash (Priority)Google Gemini API$1.35$6.75
Gemini Omni FlashGoogle Gemini API$1.50$9
Gemini Nano Banana 2.1Google Gemini API$1.50$7.50
Gemini 4 Argon (Standard)Google Gemini API$2$10
Gemini 3.1 Pro Preview (prompt <=200K tokens)Google Gemini API$2$12
Gemini 2.5 Pro (prompt >200k tokens)Google Gemini API$2.50$15
Gemini 4 Argon (Priority)Google Gemini API$3.60$18
Gemini 3.1 Pro Preview (prompt >200K tokens)Google Gemini API$4$18
Gemini 4 Argon (Batch)Google Gemini APIunlistedunlisted
Gemini 3.8 Flash (Batch)Google Gemini APIunlistedunlisted
Gemini 3.6 Flash (Batch)Google Gemini APIunlistedunlisted
Gemini 3 Pro Image (Nano Banana Pro)Google Gemini APIunlisted$12
grok-4.7xAI API$2$6

Models are compared by name and price, never by position. Pick one model per service, or "Cheapest model", in the cost table above.

Tiers, aligned by position

Tiers of Google Gemini API and xAI API aligned by position: free, entry, mid, top
PositionGoogle Gemini APIxAI API
Free$0 / moFreeno tier
EntryContact salesEnterpriseno tier
Midno tierno tier
Topno tierno tier

Tightest rate limit

Tightest documented rate limit of each service
MeasureGoogle Gemini APIxAI API
Tightest limitunlistedunlisted

Changes in the last 90 days

No changes recorded.

No change detected for either service in the last 90 days.