Last refreshed 2026-10-19. Next refresh: weekly.
Why use Mercury 2.5 on Vercel AI Gateway?
Vercel AI Gateway offers Mercury 2.5 with pay-as-you-go pricing at $0.04/1M input tokens. Vercel AI Gateway is a unified AI proxy providing a single OpenAI-compatible API endpoint to 275+ models from 25+ providers including Anthropic, OpenAI, Google, Meta, Mistral, DeepSeek, xAI, Alibaba, Amazon, ByteDance, Cohere, MiniMax, MoonshotAI, KwaiPilot, Black Forest Labs, Recraft, Voyage AI, NVIDIA, and more.
Compare Mercury 2.5 across 3 providers to find the best fit for your use caseInput / 1M
$0.040
Output / 1M
$0.15
Cache
read $0.004
Batch
Not sourced
Setup recipe
Python + curlInstall
pip install openaiAuth
export AI_GATEWAY_API_KEY=...Call
import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["AI_GATEWAY_API_KEY"],Model ID
inception/mercury-2.5Request example
import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["AI_GATEWAY_API_KEY"],
base_url="https://ai-gateway.vercel.sh/v1"
)
response = client.chat.completions.create(
model="inception/mercury-2.5",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Gotchas
- Use provider model ID "inception/mercury-2.5", not the LLMReference slug "mercury-2.5".
- creator/model-name e.g. kwaipilot/kat-coder-pro-v2
- The examples expect AI_GATEWAY_API_KEY; rename it only if your application config maps the new variable.
Compare Mercury 2.5 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Inception | $0.20 | $0.75 |
| Vercel AI Gateway | $0.04 | $0.15 |
| OpenRouter | $0.04 | $0.15 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.04 |
| Output tokens | $0.15 |
Capabilities
ReasoningJSON / Tool useStructured Outputs
About Mercury 2.5
Mercury 2.5 is Inception Labs' diffusion LLM GA (API id mercury-2.5). 260K context, 65,536 max output. Tunable reasoning, tool calling, structured outputs. Distinct from Mercury 2.5 Preview. Docs list $0.20/$0.75 per 1M; launch promo $0.04/$0.15 still on API/OR.
Get Started
Model Specs
Released2026-09-08
Context260K