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GPT-5.4
gpt-5.4 is available for chat, coding, reasoning, and agent workflows. PoYo meters input at 210 credits per 1M tokens and output at 1680 credits per 1M tokens.
gpt-5.4
Chat
Model:
GPT-5.4 API supports chat and coding for production assistants, coding agents, support tools, and structured reasoning workflows.
Pricing details
Transparent pricing with no hidden fees. Pay as you go.
gpt-5.4Input
PoYo price
$1.05/1M tokens
210 credits
Official price
$1.75/1M tokens
Official
You save
40%
gpt-5.4Output
PoYo price
$8.40/1M tokens
1680 credits
Official price
$14.00/1M tokens
Official
You save
40%
| Model | Spec | PoYo price | Official price | You save |
|---|---|---|---|---|
| gpt-5.4 | Input | $1.05/1M tokens 210 credits /1M tokens | $1.75/1M tokens Official | 40% |
Output | $8.40/1M tokens 1680 credits /1M tokens | $14.00/1M tokens Official | 40% |
* Actual fees are based on the final output.
Introduction
Complete guide to using GPT-5.4 API for balanced production GPT workloads
GPT-5.4 API for balanced production GPT workloads
Run GPT-5.4 on PoYo when you need strong GPT reasoning without sending every request to the flagship tier. It supports /v1/chat/completions for mature chat clients and /v1/responses for agent-style workflows.
Available GPT-5.4 API model on PoYo
Key features of GPT-5.4 API
GPT-5.4 is the practical default layer between low-cost GPT-5.2 traffic and GPT-5.5 escalation requests.
01
Cost-aware GPT reasoning
GPT-5.4 is well suited for everyday production requests that still need strong coding, analysis, and instruction following.
- Default production GPT tier
- Good balance of quality and cost
- Lower price than GPT-5.5
02
1M context for long tasks
Use the larger context window for business documents, support histories, specifications, and multi-file development tasks.
- 1M context window
- 128K maximum output
- Long document workflows
03
Compatible with old and new GPT clients
Teams can keep Chat Completions integrations running while testing Responses payloads for reasoning and tool workflows.
- /v1/chat/completions
- /v1/responses
- One PoYo billing balance
04
Main layer before GPT-5.5 escalation
Route normal coding and chat traffic to GPT-5.4, then upgrade only the hardest requests to GPT-5.5.
- Efficient model routing
- Good for paid product defaults
- Predictable token spend
Best GPT-5.4 API use cases
01
Default production chat model
Use GPT-5.4 for customer-facing assistants that need strong answers but cannot justify flagship cost on every turn.
02
Routine coding assistants
Generate implementation plans, code explanations, review notes, and tests for regular developer workflows.
03
Long-context business analysis
Summarize documents, compare records, and answer questions over large internal context.
04
Multi-model cost tiers
Place GPT-5.4 between GPT-5.2 and GPT-5.5 so your router has a clear middle tier.
GPT-5.4 API model comparison
Choose by model generation, context window, latency profile, and token budget. PoYo keeps endpoint and billing workflows consistent across these chat models.
| Feature | GPT-5.4 | GPT-5.5 | GPT-5.2 | Gemini 3.5 Flash |
|---|---|---|---|---|
| Provider | OpenAI | OpenAI | OpenAI | |
| Endpoint support | Chat + Responses | Chat + Responses | Chat + Responses | Chat + Gemini Native |
| Context window | 1M | 1M | 400K | 1M |
| Max output | 128K | 128K | 128K | 64K |
| PoYo input price | $1.05 / 1M | $3.00 / 1M | $0.44 / 1M | $0.90 / 1M |
| PoYo output price | $8.40 / 1M | $18.00 / 1M | $3.50 / 1M | $5.40 / 1M |
| Best fit | Cost-effective GPT coding, agent backends, and long-context professional workflows. | Hardest GPT coding and agents | Stable previous frontier GPT | Fast multimodal agents |
Model capabilities are summarized from official public documentation checked on May 21, 2026. PoYo prices are credit-based.
How to use GPT-5.4 API on PoYo
Step 1: Create a PoYo API key
Open the dashboard, generate an API key, and add credits for chat usage.
Create API Key
Step 2: Pick Chat Completions or Responses
Use /v1/chat/completions for existing OpenAI-compatible chat apps. Use /v1/responses for reasoning controls, tools, and newer response items.
Step 3: Send a requestcurl --request POST \
--url https://api.poyo.ai/v1/responses \
--header 'Authorization: Bearer YOUR_API_KEY' \
--header 'Content-Type: application/json' \
--data '{
"model": "gpt-5.4",
"input": "Design a test plan for a billing migration.",
"reasoning": {"effort": "medium"}
}'
View chat API docs
GPT-5.4 API pricing on PoYo
| Meter | PoYo credits | USD equivalent |
|---|---|---|
| GPT-5.4 input | 210 credits / 1M tokens | $1.05 / 1M tokens |
| GPT-5.4 output | 1680 credits / 1M tokens | $8.40 / 1M tokens |
PoYo pricing is positioned about 40% cheaper than official pricing. No subscription fees. Use one API key, dashboard usage tracking, and pay-as-you-go credits.
Frequently asked questions about GPT-5.4 API
What is GPT-5.4 best for?
Cost-effective GPT coding, agent backends, and long-context professional workflows.
Which endpoints does PoYo support for GPT-5.4?
PoYo supports /v1/chat/completions and /v1/responses for GPT chat models.
How much does GPT-5.4 cost on PoYo?
GPT-5.4 costs 210 credits per 1M input tokens and 1680 credits per 1M output tokens, equivalent to $1.05 input and $8.40 output per 1M tokens.
Can I test it before integrating?
Yes. The model page includes a playground for signed-in users, so you can test prompts and endpoint behavior before moving the model ID into production.
Why use PoYo for GPT-5.4 API access
01
Better default production layer
GPT-5.4 is easier to run as the everyday GPT model while reserving GPT-5.5 for exceptions.
02
Clear routing with other GPT models
Pair GPT-5.4 with GPT-5.2 for low-cost tasks and GPT-5.5 for high-stakes requests.
03
Transparent token cost
PoYo lists GPT-5.4 at 210 input credits and 1680 output credits per 1M tokens, about 40% below official pricing.
04
Two GPT endpoints
Use Chat Completions for compatibility and Responses when you want newer agent semantics.