LLM API pricing

Step 3.7 Flash API pricing: cheapest provider

2 providers sell Step 3.7 Flash. DeepInfra is cheapest, and listed prices are close.

Cheapest$0.4375per 1M · DeepInfra
Input · output$0.20 / $1.15per 1M tokens
Price gap1.0×across 2 providers
Context262Kmax tokens

$0.4375 DeepInfraclose prices$0.4375 Novita AI

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Already paying for Step 3.7 Flash? Check if you overpay →

Standard list prices in USD from each provider's pricing page · last price change Sep 28, 2026 · How we collect and rank prices

Ranked for your volume

Step 3.7 Flash monthly cost by provider

Change the monthly tokens and the ranking updates instantly, using each provider's standard list price.

Input tokens per month (millions)Prompts, context and documents you send.Output tokens per month (millions)Tokens the model generates.

More requirements: caching, context, features, provider

Cached share of input (%)0 = no caching. Only documented cache-read rates qualify.Required context per request (tokens)0 = any. Providers without a sufficient known limit are excluded.Required featureProvider requirement

Provider	Estimated / month	Input / 1M	Output / 1M	Cached input / 1M	Context
1 DeepInfraInference provider - lowest for your volumePricing page	$4.30	$0.20	$1.15	$0.04	262,144
2 Novita AIInference providerPricing page	$4.30	$0.20	$1.15	$0.04	262,144

Order depends on listed price for your volume only. No provider pays for its position.

Input volume includes the cached share, not an additional token volume. This is a list-price estimate, not a quote: cache-write charges, cache eligibility/TTL, batch discounts, long-context surcharges, regional pricing and taxes are excluded. Check the provider's terms for your workload before switching.

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| Step 3.7 Flash provider | Input / 1M tokens | Output / 1M tokens | 10M in + 2M out per month |
|---|---:|---:|---:|
| DeepInfra | $0.20 | $1.15 | $4.30 |
| Novita AI | $0.20 | $1.15 | $4.30 |

Standard list prices as of Oct 31, 2026. Source: [AISelect.online](https://aiselect.online/models/step-3-7-flash)

Price history

The cheapest price has not changed since tracking started on Sep 28, 2026: $0.4375 per 1M tokens at DeepInfra. All price changes

Switch to the cheapest provider

Switch to DeepInfra

Already using the OpenAI SDK? Change the base URL, key and model name:

from openai import OpenAI
import os

client = OpenAI(
    base_url="https://api.deepinfra.com/v1/openai",
    api_key=os.environ["DEEPINFRA_API_KEY"],
)
response = client.chat.completions.create(
    model="stepfun-ai/Step-3.7-Flash",
    messages=[{"role": "user", "content": "Hello"}],
)

Base URL from DeepInfra's API docs, model name from the open pricing datasets. Check the model page in DeepInfra's docs before you switch production traffic.

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Before you pick a provider

2 of 2 providers list a cached-input price. Repeated system prompts or documents can cost much less there than the standard input rate shown above.

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