GPT-5.4 API pricing
As of October 21, 2026, OpenAI GPT-5.4 costs $2.50 per million input tokens and $15.00 per million output tokens through OpenRouter, with cached input at $0.25 per million.
- Input, per million tokens$2.50
- Output, per million tokens$15.00
- Cached input, per million$0.25
- Context window1.05M tokens
- Max output128K tokens
- Output speedNot measured
What a request costs
Three fixed token mixes at the list price, without cache or batch discounts. For a whole month, use the calculator.
| Workload | Tokens | One request | 1,000 requests | Fits the context window |
|---|---|---|---|---|
| Chat turn | 1K input + 500 output tokens | $0.010 | $10.00 | Yes |
| Repository review | 50K input + 3K output tokens | $0.170 | $170.00 | Yes |
| Agent loop | 200K input + 10K output tokens | $0.650 | $650.00 | Yes |
| Solved coding task | One SWE-bench Verified attempt, divided by the share that succeed | $1.02 | $1020.00 |
Price history
We read this price every day and have since October 15, 2026. It has not changed yet; any change will be listed here with its date.
- October 15, 2026 First recorded: $2.50 input, $15.00 output
Cheaper models as good as GPT-5.4
Models within two points of GPT-5.4 or above it on the Artificial Analysis Intelligence Index, with a lower output price. Cheapest first.
- Ling 3.1 Flash$0.225 Overall 41.1 against 39.0 · 99% cheaper output
- MiMo-V2.6-Flash$0.28 Overall 37.9 against 39.0 · 98% cheaper output
- Claude Haiku 5.5$0.50 Overall 43.4 against 39.0 · 97% cheaper output
- GLM 5.3 Flash$0.50 Overall 41.8 against 39.0 · 97% cheaper output
- GPT-6 Luna$0.50 Overall 38.1 against 39.0 · 97% cheaper output
GPT-5.4 pricing questions
- How much does GPT-5.4 cost per million tokens?
- $2.50 per million input tokens and $15.00 per million output tokens, as listed on OpenRouter on October 21, 2026.
- Does GPT-5.4 support prompt caching?
- Yes. OpenRouter lists cached input at $0.25 per million tokens, against $2.50 for uncached input.
- Is there a cheaper model as good as GPT-5.4?
- Ling 3.1 Flash scores 41.1 on the Artificial Analysis Intelligence Index, within two points of GPT-5.4 or above it, and costs $0.225 per million output tokens.
- Has the price of GPT-5.4 changed?
- Not since we started recording it daily on October 15, 2026.