Updated 9 Nov · updated in the last 30 hours

MiniMax M3.1 Flash (free) API Pricing

MiniMax M3.1 Flash (free) API pricing: free ($0.00 per 1M tokens) for input and $0.00 per 1M tokens for output, from OpenRouter. Published Last checked · Source (data) · Methodology

No OpenRouter listing recorded after 22 Oct 2026; the price above is the last one listed, not a current price.

OpenRouter: Published price: $0.00 per 1M tokens (free), in USD as the source shows it · as shown in the United States on 22 Oct 2026 · the page does not say whether tax is included; we do not assume it is excluded · no price change seen since 20 Oct 2026.

Data as of9 Nov 2026Prices checked 9 Nov 2026 · test requests to 8 Nov 2026Data & API
Task receipt: OpenRouter: $0.0000 Calculated · Document analysis Assumption: 3 steps; initial input 50,500 tokens; growth 2,500 tokens/step; visible output 1,000 tokens/step. Month: 14,600 tasks. No hidden reasoning or retries. Formula: sum of input, output, cache reads and cache writes × their published rates / 1M. Each step uses its own context tier. Missing cache or batch prices are Unknown.
Task receipt.Calculated · Document analysis Assumption: 3 steps; initial input 50,500 tokens; growth 2,500 tokens/step; visible output 1,000 tokens/step. Month: 14,600 tasks. No hidden reasoning or retries. Formula: sum of input, output, cache reads and cache writes × their published rates / 1M. Each step uses its own context tier. Missing cache or batch prices are Unknown. Open image · Explore the chart · Measured Lab · CC BY 4.0
See cost receipt

Prices USD per 1M tokens, as listed

No longer listed: last listed prices

  • $0.00Input per 1M tokens, through OpenRouter Published
  • $0.00Output per 1M tokens, through OpenRouter Published
All prices by channel
Price per 1M tokensProvider directThrough OpenRouterPrevious prices by channel
Input—$0.00 Published—
Output—$0.00 Published—

Input price through OpenRouter, 20 Oct 2026 – 22 Oct 2026

20 Oct 2026$0.00 throughout22 Oct 2026

Context window1,000,000tokens Published
Max output524,288tokens Published

How we got this number

  • What we read: the published price on openrouter.ai/api/v1/models
  • Checked: ; tracked since 20 Oct 2026
  • Shown in: the United States
  • Checks so far: 3 checks since 20 Oct 2026
  • What changed: no price change since 20 Oct 2026
  • Page updated:

Other measured facts

QuestionAnswerCheckedStatus
How much does MiniMax M3.1 Flash (free) cost per 1M output tokens on OpenRouter?$0.00 per 1M tokens (free)Published
What is the context window of MiniMax M3.1 Flash (free) on OpenRouter, in tokens?1,000,000 tokensPublished
What is the maximum output length of MiniMax M3.1 Flash (free) on OpenRouter, in tokens?524,288 tokensPublished

History

Same price in all 3 checks since 20 Oct 2026.

  1. — First check: $0.00 per 1M tokens (free) Added to tracking later than most plans here; it joins month-to-month comparisons from its second month.

The source record lists $0.00 per token (free) ($0.00 per 1M tokens (free)), fetched on 22 Oct 2026.

The source record, as published
"prompt":"0"
What the source says · openrouter.ai

Latest briefings each price change recalculated as a task cost

  1. DeepSeek V4 Pro 0813: price rise input $0.115 → $0.111 per 1M tokens (-3 %), output $4.00 → $4.44 per 1M tokens (+11 %)
  2. DeepSeek V4.1 Flash 1017: price cut input $0.300 → $0.0060 per 1M tokens (-98 %), output $1.20 → $0.500 per 1M tokens (-58 %)
  3. MoonshotAI Kimi K2.5: price rise input $0.500 → $0.532 per 1M tokens (+6 %), output $2.50 → $3.33 per 1M tokens (+33 %)

All briefings

Record history — 12 records for 4 questions
Last record
Shown in
the United States
How much does MiniMax M3.1 Flash (free) cost per 1M input tokens on OpenRouter?
TimeValueStatus
22 Oct 2026$0.00 per 1M tokens (free)Published
21 Oct 2026$0.00 per 1M tokens (free)Published
20 Oct 2026$0.00 per 1M tokens (free)Published
How much does MiniMax M3.1 Flash (free) cost per 1M output tokens on OpenRouter?
TimeValueStatus
22 Oct 2026$0.00 per 1M tokens (free)Published
21 Oct 2026$0.00 per 1M tokens (free)Published
20 Oct 2026$0.00 per 1M tokens (free)Published
What is the context window of MiniMax M3.1 Flash (free) on OpenRouter, in tokens?
TimeValueStatus
22 Oct 20261,000,000 tokensPublished
21 Oct 20261,000,000 tokensPublished
20 Oct 20261,000,000 tokensPublished
What is the maximum output length of MiniMax M3.1 Flash (free) on OpenRouter, in tokens?
TimeValueStatus
22 Oct 2026524,288 tokensPublished
21 Oct 2026524,288 tokensPublished
20 Oct 2026524,288 tokensPublished
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Explore the numbers

MiniMax M3.1 Flash (free)

OpenRouter$0.0000$0$1OpenRouter$0.0000$0$1
OpenRouter$0.00$0$1OpenRouter$0.00$0$1

Calculated · Document analysis

Assumption: 3 steps; initial input 50,500 tokens; growth 2,500 tokens/step; visible output 1,000 tokens/step. Month: 14,600 tasks. No hidden reasoning or retries.

Formula: sum of input, output, cache reads and cache writes × their published rates / 1M. Each step uses its own context tier. Missing cache or batch prices are Unknown.

Fresh input · Visible output · Cache read · Cache write

Sources: this page; published model prices (data (JSON)); task assumptions (data (JSON)). Published prices · Observed responses · Calculated scenarios · Assumptions stated with each chart.