Models

Call Portal M2-25 or Portal M3-55 and pay per token in USD.

Available models
Portal M2-25 Non-fast 200k

A frontier agentic coding model. Built for long-context reasoning, precise edits, and tool use - exposed through a single stable model id.

Get an API key →
200K context window Frontier class Streaming Tool / function calling Prompt caching
Model id
portal/m2-25
Context window
200,000 tokens
Billing
Per token, USD
Endpoint
/v1/chat/completions
Per 1M tokens · USD
InputTokens you send in the request
$0.12
/ 1M
Cached inputCache read - repeated context served from cache
$0.05
/ 1M
Cache writeWriting new context into the cache
$0.12
/ 1M
OutputTokens the model generates
$0.59
/ 1M

Every call is metered per token in USD and billed against your wallet - monthly plan credit first, then your prepaid balance. See your real spend per call, with full token breakdowns, in Usage and Logs.

Portal M2-25 Fast 200k

Priority tier - same capabilities as Portal M2-25 Non-fast, higher throughput and on-demand billing.

Get an API key →
200K context window Priority tier Frontier class Streaming Tool / function calling
Model id
portal/m2-25-fast
Context window
200,000 tokens
Billing
Per token, USD
Endpoint
/v1/chat/completions
Per 1M tokens · USD
Input
$0.70
/ 1M
Cached input
$0.30
/ 1M
Cache write
$0.70
/ 1M
Output
$3.50
/ 1M
Portal M3-55 XH 1M

Top-tier general-purpose frontier model at Extra-High reasoning effort with a 1M-token context window. For complex agents, analysis and tool-heavy workflows.

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1M context window Extra-High reasoning effort Frontier class Streaming Tool / function calling Prompt caching
Model id
portal/m3-55-xh-1m
Context window
1,000,000 tokens
Reasoning effort
Extra-High
Billing
Per token, USD
Per 1M tokens · USD
Input
$3.50
/ 1M
Cached input
$0.35
/ 1M
Cache write
$3.50
/ 1M
Output
$21.00
/ 1M

Reasoning effort and context length don't change the per-token rate - pick the Extra-High tier for the hardest problems at no premium. Metered per token in USD and billed against your wallet.

Portal M3 500K Fast New

Flagship-speed frontier tier: near-top reasoning at priority speed with a 500K-class context window. The default when you want strong and fast at once.

Get an API key →
500K context window Priority speed Frontier class Streaming Tool / function calling Prompt caching
Model id
portal/m3-500k-fast
Context window
500,000 tokens
Billing
Per token, USD
Endpoint
/v1/chat/completions
Per 1M tokens · USD
Input
$2.80
/ 1M
Cached input
$0.70
/ 1M
Cache write
$2.80
/ 1M
Output
$8.40
/ 1M

This catalog contains Portal-branded customer routes. Underlying routing and availability may change.

Start building

Mint a key in the dashboard and point any OpenAI-compatible client at https://api.portal.ai/v1.