IN

Ling 3.1 Flash

75% off
inclusionAIReleased Oct 2, 2026inclusionai/ling-3.1-flash
CostCompare

Ling-3.1-flash is an upgraded native hybrid reasoning model (560B total, 25B active) with a 1M-token context window, built for complex real-world tasks.

Context
262K
Max output
131K
Input /1M
$0.07$0.30
Output /1M
$0.22$0.90
Blended /1M
$0.11$0.45
AcceptsTextProducesTextTokenizer Other

Launch offer · 75% off on every provider

Applied automatically; prices return to list when each offer ends.

Price schedule by provider

DiscountedList price

DeepInfra$0.30 / $0.90
-75% · ongoing
Today · Nov 4Nov 18
Price after offer (in/out)

Providers

FastRouter routes your requests to this provider. You can also bring your own key.

DeepInfra logo
DeepInfrafp4
deepinfra
Input /1M$0.30$0.07
Output /1M$0.90$0.22
Context262K
Max output131K
Latency—
Throughput—
Offer
-75%Ongoing
Supports tool callingSupports structured (JSON) outputSupports reasoning

Offers without an end date apply until further notice.

Supported parameters

Request parameters you can send with this model.

Core (Sampling & basic generation)

max_tokens
Maximum tokens to generate.
min_p
Minimum probability threshold for sampling.
seed
Seed for deterministic sampling.
stop
Sequences where generation stops.
temperature
Controls randomness of output.
top_k
Limits sampling to top K tokens.
top_p
Nucleus sampling threshold.

Penalties (Token Penalties)

frequency_penalty
Penalizes frequent tokens.
presence_penalty
Penalizes tokens already present.
repetition_penalty
Penalizes repeated tokens.

Reasoning (Reasoning Controls)

include_reasoning
Include reasoning trace in the response.
reasoning
Provider-specific reasoning configuration.

Tool Use (Function Calls & Tools)

tool_choice
How the model should use tools.
tools
Tool/function definitions available to the model.

Output & Format (Response Formatting)

logprobs
Return log probabilities of output tokens.

Performance

Median throughput and time to first token per provider over the last week.

Throughput

Latency

Make your first API call

OpenAI-compatible. Point your SDK at FastRouter, or call the API directly.

Full API docs
Replace <FASTROUTER_API_KEY> with your key · Get your key →Install
OpenAI SDKHTTP
from openai import OpenAI
client = OpenAI(
base_url="https://api.fastrouter.ai/api/v1", # FastRouter base URL
api_key= "<FASTROUTER_API_KEY>", # Replace with your FastRouter API key
)
completion = client.chat.completions.create(
model="inclusionai/ling-3.1-flash", # Replace with your model ID
messages=[
{ "role": "user", "content": "What is the meaning of life?" }
]
)
print(completion.choices[0].message.content)

Frequently asked questions

More models from inclusionAI

IN
Ling 3.0 Flashinclusionai/ling-3.0-flash

Ling-3.0-flash prioritizes token efficiency and agentic inference at production scale within limited token, latency and serving-cost budgets.

IN
Ling 3.0 Flash VLinclusionai/ling-3.0-flash-vl

Multimodal version of Ling-3.0-flash (124B total, ~5.5B active) with native text, image and video understanding for multimodal agentic workflows.

Model scores sourced from ArtificialAnalysis