Published API listings with native prices and dated evidence. Check the official source for current availability and account eligibility.
StepFun input and output pricesUSD per 1M tokens · headline rates · log scale
Input
Output
StepFun input and output prices
Category
Item
USD per 1M tokens
Step-3.5-Flash
Input
$0.10
Step-3.5-Flash
Output
$0.30
Step-3.7-Flash
Input
$0.20
Step-3.7-Flash
Output
$1.15
Step-5 Preview
Input
$1.00
Step-5 Preview
Output
$2.70
Headline USD token rates per 1M; other currencies and units remain native. Original rates are below. Unknown means no unambiguous headline; inspect all rates and conditions below.
Raw SHA-256: e53bfd9dc98d997e58aeda7d9030de843588063fda5bbe4569f39c9844c3449a; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 734d06ca34b5a4d8ec1e673c08126b1b344bfb094ac37410b9216c2a874f9711; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 1bb24b326b8c3bd3c7118c61067bce83fa36f056983e4b296338e9f75b8b19b0; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 4a7df9e638dddfc620ffa2fc872003b1177530845bd255480d2bba3e58dfdaf4; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 7998c3ae295b1e7fcd24f2fd1d04c94b18f72d796176d27f49d6485768fa0673; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: dcaeb0c5389fb8218a5b57eafa22b3da572f52bff80ae7a7bc35acb1cb04da01; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Official StepFun model page for step-3.5-flash, raw SHA-256 65dcbc8ea619b338c78d7dcba28cf37f39fb6dd507da92740edee6d91ed30d74: "Context length 256K tokens".
Visible shorthand recorded as stated (#504); not converted to an exact token count.
Specifications only: no pricing, availability, capability or release-date assertion.
Raw SHA-256: dcaeb0c5389fb8218a5b57eafa22b3da572f52bff80ae7a7bc35acb1cb04da01; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: d09376206e90e63192fca3540bae3690e6d47dbbe70fc0fc480700cde3206877; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 6daaf65ec793230b80184ed145862ed6b20ff333b915296d14bfa1689efd45d8; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: e53bfd9dc98d997e58aeda7d9030de843588063fda5bbe4569f39c9844c3449a; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 734d06ca34b5a4d8ec1e673c08126b1b344bfb094ac37410b9216c2a874f9711; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 1bb24b326b8c3bd3c7118c61067bce83fa36f056983e4b296338e9f75b8b19b0; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 4a7df9e638dddfc620ffa2fc872003b1177530845bd255480d2bba3e58dfdaf4; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 7998c3ae295b1e7fcd24f2fd1d04c94b18f72d796176d27f49d6485768fa0673; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: dcaeb0c5389fb8218a5b57eafa22b3da572f52bff80ae7a7bc35acb1cb04da01; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Official StepFun model page for step-3.7-flash, raw SHA-256 b31461e60b74e1824bcf1d6a7366df8cc54252f53d3754ab5be896239652936c: "Context length 256K tokens".
Visible shorthand recorded as stated (#504); not converted to an exact token count.
Specifications only: no pricing, availability, capability or release-date assertion.
Raw SHA-256: dcaeb0c5389fb8218a5b57eafa22b3da572f52bff80ae7a7bc35acb1cb04da01; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: d09376206e90e63192fca3540bae3690e6d47dbbe70fc0fc480700cde3206877; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 6daaf65ec793230b80184ed145862ed6b20ff333b915296d14bfa1689efd45d8; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: e53bfd9dc98d997e58aeda7d9030de843588063fda5bbe4569f39c9844c3449a; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 734d06ca34b5a4d8ec1e673c08126b1b344bfb094ac37410b9216c2a874f9711; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 1bb24b326b8c3bd3c7118c61067bce83fa36f056983e4b296338e9f75b8b19b0; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 4a7df9e638dddfc620ffa2fc872003b1177530845bd255480d2bba3e58dfdaf4; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 7998c3ae295b1e7fcd24f2fd1d04c94b18f72d796176d27f49d6485768fa0673; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: dcaeb0c5389fb8218a5b57eafa22b3da572f52bff80ae7a7bc35acb1cb04da01; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Official StepFun model page for step-5-preview, raw SHA-256 3485f9d5f9c78c6b62572e9e4bd338526c87ec2609cd8762ea2ae3900a3953a7: "| Context window | 1M tokens |".
Visible shorthand recorded as stated (#504); not converted to an exact token count.
Specifications only: no pricing, availability, capability or release-date assertion.
Raw SHA-256: dcaeb0c5389fb8218a5b57eafa22b3da572f52bff80ae7a7bc35acb1cb04da01; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: d09376206e90e63192fca3540bae3690e6d47dbbe70fc0fc480700cde3206877; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
Raw SHA-256: 6daaf65ec793230b80184ed145862ed6b20ff333b915296d14bfa1689efd45d8; collector stepfun-international-1.
Pricing and listing observation only; no checkpoint, license, context-window or release-date assertions. The API models are not linked to downloadable checkpoints.
About capability scores (Epoch AI)
Capability scores: Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks' [online resource], epoch.ai/benchmarks. Accessed 2026-10-31. Licensed CC BY 4.0; values here are rounded to one decimal place and grouped into bands.
The Epoch Capabilities Index (ECI) combines many benchmarks on a scale where Claude 3.5 Sonnet is 130 and GPT-5 is 150. Bands, on the displayed one-decimal score: Frontier 160+, Strong 150–159.9, Capable 140–149.9, Entry below 140. Each score has a 90% range; a range that crosses a band boundary is flagged. Models are not ranked: neighbouring scores often overlap.
A benchmark is not your workload. Epoch's scores mostly reflect runs at the highest reasoning effort, which use more output tokens than default settings. Scores are dated and can shift between Epoch releases. A score belongs to the developer's model; a host listing shows the same model's score, but hosts may serve different versions or quantizations.
How headline rates are chosen
Headline rates use the directory's shared rule: the rate a buyer meets by default, chosen by billing, tier and context dimensions and never by price. Context caps, the bracket starting at zero and short-context variants are labeled; unverified availability is flagged and is not a service guarantee. Batch, off-peak and other variants remain in the details; ambiguous headlines stay unknown.
No currency conversion is performed. Missing cache prices are unknown, not zero. Equal units do not establish equivalent models or service conditions. See the methodology and source register.