MODEL PROOF
GPT-5.4
TRADE-OFF
A stored alternative has an equal-or-higher score and an equal-or-lower price, with capability losses.
Base context tier shown; inspect the complete context ladder below.
Gemini 3.8 Flash · Δ score 44.8 points · 47% lower measured price
- 1.1M → 1M context
- 128K → 66K max output
- Independent LMArena score
- 1,452.2 ± 3.67 · 67,707 votes
- Context window
- 1.05M
- Maximum output
- 128K
- Input modalities
- text, image, file
- Output modalities
- text
- Published input price
- $2.50 / 1M tokens
- Published output price
- $15.00 / 1M tokens
- Pricing kind
- fixed
- Context tiers
- Tiered by context
Inspect complete billing conditions and endpoint terms below.
Price from OpenAI: the cheapest offer that is serving, at standard delivery and at the maker’s precision or better, at its standard rate.
Cheaper right now: $2.81/M at OpenAI — delivery tier (flex) It does not pass the like-for-like test, so it never sets a rank.
Every price dimension · USD per million tokens
| Input | $2.50/M |
|---|---|
| Output | $15.00/M |
| Cached input | $0.250/M |
| Cache write | Unknown/M |
| Cache write 1h | Unknown/M |
| Reasoning | Unknown/M |
| Web search | $0.01/call |
| Batch discount | 50% |
The headline rate does not apply to a long-context workload.
Complete context ladder · 1 tier
| More than 272,000 tokens | $5.00/M in (2×) $22.50/M out $0.500/M cached input Unknown/M cache write |
|---|
Who sells it
The same weights, different shops. Cheapest is not like-for-like when serving precision differs.
7 provider offers · rates, limits and conditions
Rates are USD per million tokens. Endpoint terms can differ even when the quoted price and precision match. A listed parameter is a provider declaration, not a task-success test.
| Seller | Input | Output | Precision | Uptime (1d) |
|---|---|---|---|---|
| OpenAIopenai/flex Endpoint terms
| $1.25 | $7.50 | undeclared | 91.36% |
| Azureazure Endpoint terms
| $2.50 | $15.00 | undeclared | 99.97% |
| OpenAIopenai Endpoint terms
| $2.50 | $15.00 | undeclared | 99.99% |
| Azureazure/us Endpoint terms
| $2.75 | $16.50 | undeclared | — |
| Azureazure/eu Endpoint terms
| $2.75 | $16.50 | undeclared | 100.00% |
| Amazon Bedrockamazon-bedrock/us-east-1 Endpoint terms
| $2.75 | $16.50 | undeclared | — |
| OpenAIopenai/fast Endpoint terms
| $5.00 | $30.00 | undeclared | 100.00% |
Independent scores
| LMArena Elo | 1452.2default |
|---|
LMArena Elo under CC BY 4.0. Absence of another board is not a score of zero.
Best rankings by task
- ASCII art #23 1210
- Godot games #25 1135
- SVG #26 1194
- Game development #33 1251
- Data visualisation #34 1243
- Native Android apps #36 1046
- Web apps #37 1052
- UI components #38 1245
Per-task Elo and rank from Design Arena, via OpenRouter’s model feed. The rank is the feed’s, and it counts models OpenRouter does not list.
Capability
| Context window | 1M |
|---|---|
| Max output | 128K |
| Input modes | text, image, file |
| Tool use | yes |
| Reasoning | optional |
| Open weights | no |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-10-06 |
| Quality data | verified |
| Cross-checked | vendor page |
GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...
Questions this page answers
What does GPT-5.4 cost?
$2.50/M in, $15.00/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.
Does GPT-5.4 have an independent quality score?
GPT-5.4 has an LMArena score in this catalogue.
What beats GPT-5.4?
Gemini 3.8 Flash has an equal-or-higher measured score and an equal-or-lower price, with capability trade-offs.
Does this page use Artificial Analysis scores for GPT-5.4?
No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.
MODEL MONUMENT
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[](https://undominated.ai/models/openai__gpt-5.4/)<a href="https://undominated.ai/models/openai__gpt-5.4/"><img src="https://undominated.ai/badge/openai__gpt-5.4.svg" alt="GPT-5.4 — Undominated.ai dominance verdict" height="36"></a>Direct file: https://undominated.ai/badge/openai__gpt-5.4.svg — a static SVG, written by scripts/build-badges.mjs on every build, so the copy you embed is never
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