Gpt 5 4 Mini costs $0.750/1M input tokens and $4.50/1M output tokens as of 2026-06-27. Openrouter publishes this model with a 400K tokens context window. o10 lists Gpt 5 4 Mini on OpenAI at routing band C0. API slug gpt-5-4-mini. Verify list prices against the venue you call.
Last updated: 2026-06-27. Full catalog. Reference prices are dated snapshots. Compare total cost and measured task quality before choosing a route.
Gpt 5 4 Mini is a chat model from openrouter (slug: gpt-5-4-mini). Pick Gpt 5 4 Mini when you need OpenAI's general chat/vision family at this generation. It is the named GPT SKU, not a reasoning-only o-series model. Published input pricing starts at $0.750/1M tokens. Context window: 400K tokens.
Catalog snapshot 2026-06-27.
When should you pick Gpt 5 4 Mini?
Pick Gpt 5 4 Mini when you need OpenAI's general chat/vision family at this generation. It is the named GPT SKU, not a reasoning-only o-series model. Gpt 5 4 Mini has cheaper mini/nano siblings for high-volume work. Pin the full SKU only when evals fail on the smaller tier.
How does Gpt 5 4 Mini differ from sibling models?
Gpt 5 4 Mini has cheaper mini/nano siblings for high-volume work. Pin the full SKU only when evals fail on the smaller tier.
How much does Gpt 5 4 Mini cost per million tokens?
Gpt 5 4 Mini costs $0.750/1M input tokens and $4.50/1M output tokens in the gateway catalog snapshot (2026-06-27). Endpoint pricing may differ by fulfillment host.
Sourced from gateway catalog snapshot.
Where can you run Gpt 5 4 Mini?
Gpt 5 4 Mini is configured on OpenAI. Known host IDs: openai: openai/gpt-5.4-mini. This model is routable through o10 eval-gated routing.
What is Gpt 5 4 Mini's context window?
Gpt 5 4 Mini supports a 400K tokens context window in the gateway catalog snapshot. Context limits may vary by fulfillment host endpoint.
What o10 routing band is Gpt 5 4 Mini?
Gpt 5 4 Mini is classified at o10 routing band C0. Bands group models by cost tier and eval profile: C0 (economy), C1 (standard), C2 (capable), C3/C4 (frontier). Production routing is enabled for this slug.
Who makes Gpt 5 4 Mini?
Gpt 5 4 Mini is attributed to source provider openrouter in the o10 catalog. Fulfillment hosts (OpenAI) supply API access; list pricing may differ by venue.
01Deep dive
Specifications
Gpt 5 4 Mini in the o10 unified catalog.
Gpt 5 4 Mini specifications
Field
Value
o10 slug
`gpt-5-4-mini`
Type
text
Band
C0
Routable
Yes
Source provider
openrouter
Primary host
OpenAI
Gateway ID
`openai/gpt-5.4-mini`
Context window
400,000 tokens
Released
2026-03-17
02Deep dive
Token pricing
Gateway snapshot pricing for Gpt 5 4 Mini.
Gpt 5 4 Mini token pricing
Unit
Price
Input
$0.75/1M tokens
Output
$4.5/1M tokens
03Deep dive
Fulfillment hosts
Upstream venues configured for Gpt 5 4 Mini.
Gpt 5 4 Mini fulfillment routes
Host
Upstream model ID
openai
openai/gpt-5.4-mini
04Deep dive
Gateway provider endpoints
Endpoint-level pricing and latency from the gateway catalog.
Gpt 5 4 Mini gateway endpoints
Provider
Input ($/1M)
Latency p50
Uptime 1d
azure
$0.75
895.5ms
9177.4%
openai
$0.75
1840ms
9990.8%
05Deep dive
Routing with o10
Eval-gated model selection for this slug.
o10 slug: gpt-5-4-mini. Band: C0. Routable: yes.
See [/models/routing](/models/routing) for smart aliases (o10/auto, o10/frontier, o10/squad) and [/kyi](/kyi) for governance.
SourceMethodology
Fulfillment catalog 2026-06-27. Gateway pricing joined where slug match exists.
Gpt 5 4 Mini costs $0.750/1M input tokens and $4.50/1M output tokens in the gateway snapshot (2026-06-27). Verify against your provider's published pricing.
What is Gpt 5 4 Mini's context window?
Gpt 5 4 Mini supports 400K tokens in the gateway catalog snapshot. Host-specific endpoints may differ.
Which hosts serve Gpt 5 4 Mini?
Gpt 5 4 Mini (gpt-5-4-mini) is configured on: OpenAI. Upstream model IDs are listed in the fulfillment routes section.
Is Gpt 5 4 Mini routable through o10?
Yes. Gpt 5 4 Mini is routable at band C0. Send model: "gpt-5-4-mini" or use an o10 smart routing alias.
How do I call Gpt 5 4 Mini via o10?
Use o10 slug "gpt-5-4-mini" or gateway ID "openai/gpt-5.4-mini" depending on your integration. Gateway-compatible endpoints accept OpenAI-style /v1 requests.
How does o10 route this model?
o10 routes Gpt 5 4 Mini only when per-use-case evals clear at your quality floor. Band C0 indicates cost tier. See /kyi for governance and /models/routing for smart aliases.