Models and pricing - Monica API Platform

Chat

The chat models charge based on input and output tokens. Different models have different costs.
Token calculation rules vary by model. Please rely on the usage field in the response.

Model Name	Model key	Pricing
GPT-5.3 Codex	`gpt-5.3-codex`	$1.75 / 1M input tokens $14.00 / 1M output tokens
gpt-5	`gpt-5`	$1.25 / 1M input tokens $10.00 / 1M output tokens
gpt-4.1	`gpt-4.1`	$2.00 / 1M input tokens $8.00 / 1M output tokens
gpt-4.1-mini	`gpt-4.1-mini`	$0.40 / 1M input tokens $1.60 / 1M output tokens
gpt-4.1-nano	`gpt-4.1-nano`	$0.10 / 1M input tokens $0.40 / 1M output tokens
gpt-4o	`gpt-4o` `gpt-4o-2024-11-20`	$2.50 / 1M input tokens $10.00 / 1M output tokens
gpt-4o-mini	`gpt-4o-mini` `gpt-4o-mini-2024-07-18`	$0.15 / 1M input tokens $0.60 / 1M output tokens
o4-mini	`o4-mini`	$0.55 / 1M input tokens $2.20 / 1M output tokens
o3	`o3`	$2.00 / 1M input tokens $8.00 / 1M output tokens
Claude Opus 4.6	`claude-opus-4-6`	$5.00 / 1M input tokens $25.00 / 1M output tokens
Claude Opus 4	`claude-opus-4-20250514` `claude-opus-4-20250514-thinking`	$15.00 / 1M input tokens $75.00 / 1M output tokens
Claude Sonnet 4.6	`claude-sonnet-4-6`	$3.00 / 1M input tokens $15.00 / 1M output tokens
Claude Sonnet 4	`claude-4-sonnet` `claude-sonnet-4-20250514` `claude-sonnet-4-20250514-thinking`	$3.00 / 1M input tokens $15.00 / 1M output tokens
Claude Sonnet 3.7	`claude-3-7-sonnet-latest`	$3.00 / 1M input tokens $15.00 / 1M output tokens
Claude Sonnet 3.5 v2	`claude-3-5-sonnet-20241022` `claude-3-5-sonnet-latest`	$3.00 / 1M input tokens $15.00 / 1M output tokens
Claude Sonnet 3.5	`claude-3-5-sonnet-20240620`	$3.00 / 1M input tokens $15.00 / 1M output tokens
Claude Haiku 4.5	`claude-haiku-4-5`	$1.00 / 1M input tokens $5.00 / 1M output tokens
Claude Haiku 3.5	`claude-3-5-haiku-latest` `claude-3-5-haiku-20241022`	$0.80 / 1M input tokens $4.00 / 1M output tokens
Claude Opus 3	`claude-3-opus-20240229`	$15.00 / 1M input tokens $75.00 / 1M output tokens
Claude Haiku 3	`claude-3-haiku-20240307` `claude-3-haiku`	$0.25 / 1M input tokens $1.25 / 1M output tokens
Gemini 3 Flash	`gemini-3-flash-preview`	$0.50 / 1M input tokens $3.00 / 1M output tokens
Gemini 2.5 Pro	`gemini-2.5-pro`	$1.25 / 1M input tokens $10.00 / 1M output tokens
Gemini 2.5 Flash-Lite	`gemini-2.5-flash-lite`	$0.10 / 1M input tokens $0.40 / 1M output tokens
Gemini 2.5 Flash	`gemini-2.5-flash`	$0.30 / 1M input tokens $2.50 / 1M output tokens
Gemini 2.0 Flash	`gemini-2.0-flash-001` `gemini-2.0-flash-thinking-exp-01-21` `gemini-2.0-flash-exp`	$0.10 / 1M input tokens $0.40 / 1M output tokens
Gemini 1.5 Pro	`gemini-1.5-pro-002` `gemini-1.5-pro-preview-0409` `gemini-1.5-pro`	$1.25 / 1M input tokens $5.00 / 1M output tokens
Gemini 1.5 Flash	`gemini-1.5-flash` `gemini-1.5-flash-002` `gemini-1.5-flash-001`	$0.075 / 1M input tokens $0.30 / 1M output tokens
xAI: Grok 3 Beta	`x-ai/grok-3-beta`	$3.00 / 1M input tokens $15.00 / 1M output tokens
xAI: Grok Beta	`x-ai/grok-beta`	$5.00 / 1M input tokens $15.00 / 1M output tokens
Meta: Llama 3 8B Instruct	`meta-llama/llama-3-8b-instruct`	$0.28 / 1M input tokens $0.83 / 1M output tokens
Meta: Llama 3.1 8B Instruct	`meta-llama/llama-3.1-8b-instruct`	$0.025 / 1M input tokens $0.06 / 1M output tokens
Meta: Llama 3.3 70B Instruct	`llama-3.3-70b-instruct`	$0.13 / 1M input tokens $0.40 / 1M output tokens
NVIDIA: Llama 3.1 Nemotron 70B Instruct	`nvidia/llama-3.1-nemotron-70b-instruct`	$1.00 / 1M input tokens $1.00 / 1M output tokens
Meta: Llama 3 70B Instruct	`meta-llama/llama-3-70b-instruct`	$0.88 / 1M input tokens $0.88 / 1M output tokens
Meta: Llama 3.1 405B Instruct	`meta-llama/llama-3.1-405b-instruct` `llama-3.1-405b-instruct`	$4.00 / 1M input tokens $4.00 / 1M output tokens
Mistral: Mistral 7B Instruct	`mistralai/mistral-7b-instruct`	$0.20 / 1M input tokens $0.20 / 1M output tokens

Image generation

Different image generation models have varying pricing methods. See the table below for details:

Model	Pricing
Stable Diffusion XL 1.0	$0.005 / image
Stable Diffusion 3 Large	$0.035 / image
Stable Diffusion 3.5 Large	$0.065 / image
Flux Schnell 1.0	$0.003 / image
Flux Dev 1.0	$0.025 / image
Flux Pro 1.0	$0.055 / image
DALL·E 3	$0.040 / image (Standard, 1024×1024) $0.080 / image (Standard, 1024×1792, 1792×1024) $0.080 / image (HD, 1024×1792) $0.120 / image (HD, 1024×1792, 1792×1024)
Playground V2.5	$0.0039 / image
Ideogram V2	$0.08 / image

Image tools

API	Pricing
`/v1/image/upscale`	$0.004 / image
`/v1/image/remove-object`	$0.004 / image

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