One agent session
1M input tokens and 100K output tokens, no caching.
- Input1M x $2.50 = $2.50
- Output0.1M x $15 = $1.50
$4.00per session
OpenAI - Closed weights
GPT-5.4 pricing and specs
GPT-5.4 is a closed-weights model from OpenAI that costs $2.50 per 1M input tokens and $15 per 1M output tokens on the first-party API, with a 1.05M-token context window.
Last verified from developers.openai.com. All sources
- Input / 1M
- $2.50
- Output / 1M
- $15
- Context
- 1.05M tokens
- Weights
- Closed
Pricing per 1M tokens
| Item | Price / 1M tokens |
|---|---|
| InputPrompts up to 272,000 tokens | $2.50 |
| OutputPrompts up to 272,000 tokens | $15 |
| Cache readPrompts up to 272,000 tokens | $0.25 |
| Batch inputBatch requests, prompts up to 272,000 tokens | $1.25 |
| Batch outputBatch requests, prompts up to 272,000 tokens | $7.50 |
| Long-context inputPrompts over 272,000 tokens | $5 |
| Long-context outputPrompts over 272,000 tokens | $22.50 |
| Long-context cache readPrompts over 272,000 tokens | $0.50 |
| Long-context batch inputBatch requests, prompts over 272,000 tokens | $2.50 |
| Long-context batch outputBatch requests, prompts over 272,000 tokens | $11.25 |
| Fast mode inputFast mode requests | $5 |
| Fast mode outputFast mode requests | $30 |
Note: Priced by prompt length: a request with more than 272K input tokens pays the long-context pricing rates for the whole request (short context is <=272K input tokens). Batch cached input is $0.13 short context / $0.25 long context. Fast mode has no long-context price listed. Regional processing adds 10%. Default snapshot gpt-5.4-2026-03-05.
Specs
- Context window
- 1,050,000 tokens
- Max output
- 128,000 tokens
- Release date
- Provider
- OpenAI
- API model id
gpt-5.4- Vercel AI Gateway id
openai/gpt-5.4- Weights
- Closed weights
What GPT-5.4 costs in practice
Worked from the standard list rates above, with the math shown so you can swap in your own token counts. These use the base rates, which apply while each request's prompt stays at or under 272,000 tokens; above that, GPT-5.4 bills $5 input and $22.50 output for the whole request.
A chat app
10,000 requests a day at 2K input and 500 output tokens each.
- Input20M x $2.50 = $50.00
- Output5M x $15 = $75.00
$125.00per day
$3,750.00 per 30-day month
The same session at a 90% cache hit
90% of the input is read from the prompt cache. The one-time cache write premium is not included.
- Cached input0.9M x $0.25 = $0.225
- Uncached input0.1M x $2.50 = $0.25
- Output0.1M x $15 = $1.50
$1.98per session
Compare with
| Model | Input / 1M | Output / 1M |
|---|---|---|
| GPT-5.4 (this page) | $2.50 | $15 |
| Claude Sonnet 4.5Anthropic | $3 | $15 |
| Claude Sonnet 4.6Anthropic | $3 | $15 |
| Kimi K3Moonshot AI | $3 | $15 |
| GPT-5.2OpenAI | $1.75 | $14 |
| GPT-5.3-CodexOpenAI | $1.75 | $14 |
| GPT-5.6 TerraOpenAI | $2 | $12 |
| GPT-4oOpenAI | $2.50 | $10 |
| GPT-5OpenAI | $1.25 | $10 |
| GPT-5.1OpenAI | $1.25 | $10 |
Compare
Side-by-side pages with both models' prices, specs, cost examples and like-for-like benchmark rows.
Related reading
- The Mid-Tier Shootout: GPT-5.4 vs Gemini 3.1 Pro vs DeepSeek V4 ProGPT-5.4 vs Gemini 3.1 Pro vs DeepSeek V4: pricing, benchmarks, context behavior, and license terms for the mid-tier models that carry most production traffic.
- GPT-5.4 for Developers: The Production GuideGPT-5.4 developer guide with OpenAI SDK code, computer use, the 272K-token pricing cliff, and when 5.4 still beats GPT-5.3 and GPT-5.5 in production.
- OpenAI's GPT 5.4 in 10 MinutesState-of-the-art computer use, steerable thinking you can redirect mid-response, and a million tokens of context. GPT 5.4 is OpenAI's most capable model yet.
- Codex CLI 0.163: Instant Steering Is Now the DefaultCodex CLI 0.163.0 makes mid-response steering the default and adds searchable /config and a leader key. What changed and what to check before upgrading.
- Tool Calling Under the Hood: Claude Messages vs OpenAI ResponsesHow tool calling works on the wire: JSON schema tools, parallel calls, tool_choice, strict mode and streaming deltas in Claude Messages vs OpenAI Responses.
- Codex 'gpt-5.5 Model Is Not Supported' Error: The FixCodex says gpt-5.5 is not supported with a ChatGPT account because OpenAI retired it from ChatGPT sign-in on October 14. The fix and what still works.
FAQ
How much does GPT-5.4 cost per million tokens?
GPT-5.4 costs $2.50 per 1M input tokens and $15 per 1M output tokens on OpenAI's first-party API, per developers.openai.com on October 17, 2026. Per 1M tokens, cache reads cost $0.25, and the batch rate is $1.25 input and $7.50 output. Prompts over 272,000 tokens are billed at $5 input and $22.50 output for the whole request.
What is GPT-5.4's context window?
GPT-5.4 has a 1,050,000-token context window and returns up to 128,000 output tokens per response.
Are GPT-5.4's weights open?
No. GPT-5.4 is a closed-weights model. You call it through OpenAI's API as gpt-5.4 or through Vercel AI Gateway as openai/gpt-5.4.
When was GPT-5.4 released?
OpenAI released GPT-5.4 on March 5, 2026.
Sources
Last verified from developers.openai.com.
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