Always-free quotaPartially privateHigh confidence

Respan span-01 Lite

A recurring no-cost API allowance covering 1 cataloged model.

Visit provider
Free accessAlways-free quota
Payment cardNo
AccountRequired
Sources6 first-party links
API endpointhttps://api.respan.ai/api/v1

Models mentioned

1
span-01-free

Equivalent paid value

Not quantifiable

How this was valued: The published allowance or a defensible paid comparison is not precise enough to calculate.

The daily cap is not numeric and no finite free token/request envelope is public. A request-size model cannot supply the missing request count. Pro costs $0.02/M but is a distinct model, not an exact Lite paid comparison.

Limits and terms

Daily Cap
Numeric amount unpublished; resets at 00:00 UTC.
Reset
00:00 UTC
Behaviors Per Request
No per-request behavior-count limit is documented; this does not remove the daily cap.

What happens to your prompts?

Partially privatePartial review

The public policies do not establish span-01-free content retention, training exclusions or operator-access controls.

Plan Scope
span-01-free native /scores inference; generic public legal policies lack API-content detail.
Prompt Retention
No span-01-specific retention promise found; observability traces may separately be stored.
Response Retention
No score-specific retention period found.
Ordinary Logging
Generic service and diagnostic usage logging disclosed.
Model Training
No explicit plan-specific exclusion or permission found for private /scores inputs.
Product Improvement
Personal information may support service improvement; API-content scope is unresolved.
Human Or Operator Access
Not documented for free-classifier inputs.
Subprocessors And Routing
First-party classification model; DPA/BAA available on request, not reviewed.
Deletion Controls
Generic account/privacy requests; no public score-input deletion controls found.
Conflict
Public contribution licensing is not treated as proof that private API traces are published or licensed.

Eligibility

Account Required
Yes
Payment Method Required
No

Primary sources

6

Before you build with Respan span-01 Lite

Read the classification narrowly

This record has current first-party evidence for some zero-cost hosted inference. The label describes the bounded offer supported by evidence on 2026-10-06; it does not guarantee permanence, production suitability, uptime, latency, model quality, or access from every region.

Resolve the live model route

This snapshot records 1 model ID. Match the exact ID against the provider's live catalog before using it in code; zero-price routes and aliases can rotate while an older documentation page remains online. The recorded base endpoint is https://api.respan.ai/api/v1, but the provider's current API reference remains authoritative for paths, authentication, and request shape.

Confirm account and billing boundaries

An account is required, so public catalog evidence cannot by itself prove the limits, balance, or billing behavior attached to your workspace. The reviewed evidence explicitly says no payment card is required. Re-check the signup flow because eligibility and billing controls can change after the snapshot. The equivalent paid value shown here prices a documented allowance where possible; it is not cash, guaranteed savings, or protection from overage.

Re-read the prompt policy for your plan

This record classifies the reviewed handling as “Partially private”: The public policies do not establish span-01-free content retention, training exclusions or operator-access controls. Provider policies can distinguish free, paid, enterprise, opted-in, and feature-specific traffic, so verify the governing terms for the exact account and route that will receive your data.

Follow the evidence, then re-check it

The record links 6 first-party sources covering the offer, catalog, limits, pricing, terms, privacy, or adoption evidence available to the audit. Prefer the newest governing document or live catalog when sources disagree, and submit a correction when a provider changes a material term.

Match the quota to the workload shape

Translate the published allowance into the traffic pattern you actually expect instead of comparing headline totals alone. A daily token pool can look generous while a low requests-per-minute or concurrency ceiling blocks interactive bursts; a high request limit can still fail a long-context job when input, output, or per-request tokens are capped. Separate prompt tokens from generated tokens, include retries and tool calls, and test the largest realistic payload. If the provider documents more than one limit window, the tightest window at your peak load is the practical ceiling. Research, experimental, and community access can also carry eligibility or fair-use constraints that cannot be modeled as a simple number.

Plan fallback without changing the rules

A fallback should preserve more than API syntax. Confirm that the substitute route supports the required modality, context length, streaming behavior, structured output, tools, and safety controls, then compare its prompt-retention and training terms. An OpenAI-compatible request shape does not make providers operationally or contractually equivalent. Decide which errors may trigger a retry, cap retry storms, and prevent an exhausted free route from silently switching to a billable model. If deterministic output matters, record the model revision and sampling settings; rotating aliases and free-model pools can change behavior even when the endpoint remains available.

Monitor the offer as a dependency

Capture the model ID, response model field, rate-limit headers, usage fields, latency, HTTP status, and any provider request identifier for each test. Watch for authorization failures, quota exhaustion, catalog removal, policy revisions, and dashboard balance changes as separate failure modes. Re-check the provider’s live catalog and governing pages on a schedule proportionate to the workload’s importance, and keep the dated sources that supported your decision. Free capacity is especially suitable for prototypes, evaluations, fallbacks, and bounded workloads when the application can tolerate change; a production dependency still needs observability, an exit path, and an owner responsible for re-verification.

Test one complete request before scaling

Start with the smallest permitted request using the exact credential, model ID, endpoint, and account type you intend to deploy. Record the HTTP status, response headers, usage fields, latency, and any dashboard balance change. Then exercise the failure path: an invalid model, an exhausted quota, or a rate-limit response should fail clearly without silently switching to a paid route. If the provider supports streaming or tool calls, validate those features separately because a free model can expose a narrower capability set than its paid counterpart. Keep a budget ceiling outside the application whenever billing is possible, and avoid sending sensitive data until the observed route matches the reviewed data agreement.