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GPT-5.4 Mini openai
Release timeline
Stages observed by the nightly radar: announced → API only → weights public → served by third parties. Each entry carries the source it was seen at.
- 2026-03-17 · API only source seeded from the earliest dated observation when first seen · observed 2026-10-07 20:20 UTC
Description
GPT-5.4 mini brings the core capabilities of GPT-5.4 to a faster, more efficient model optimized for high-throughput workloads. It supports text and image inputs with strong performance across reasoning, coding,...
via OpenRouter listing · observed 2026-10-27 06:57 UTC. The listing text is the provider's own description, not an assessment.
Where to run 2 providers · 5 endpoints
Hosted endpoints observed for GPT-5.4 Mini, sorted by input price (USD per million tokens). Each row names its observer and date; prices change daily, so check the source before quoting. Cheapest observed input price: $0.38/M.
| Provider | Model ref | Context | Quant | $/M in | $/M out | tok/s | TTFT | Tools | Status | Observed |
|---|---|---|---|---|---|---|---|---|---|---|
| OpenAI openrouter | openai/gpt-5.4-mini | 391K | unknown | $0.38 | $2.25 | — | — | yes | live | 2026-10-27 |
| Azure openrouter | openai/gpt-5.4-mini | 391K | unknown | $0.75 | $4.50 | — | — | yes | live | 2026-10-27 |
| OpenAI openrouter | openai/gpt-5.4-mini | 391K | unknown | $0.75 | $4.50 | — | — | yes | live | 2026-10-27 |
| Azure openrouter | openai/gpt-5.4-mini | 391K | unknown | $0.82 | $4.95 | — | — | yes | live | 2026-10-27 |
| OpenAI openrouter | openai/gpt-5.4-mini | 391K | unknown | $1.50 | $9.00 | — | — | yes | live | 2026-10-27 |
No third-party providers observed beyond the lab's own endpoints. Cache-read price $0.07/M (source, observed 2026-10-27).
Facts
| Context length | 400,000 tokens (391K) · OpenRouter listing |
|---|---|
| Modalities | file + image + text → text |
| Max completion tokens | 128,000 |
| Knowledge cutoff | 2025-08-31 |
| Supported parameters | include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, tool_choice, tools, verbosity |
| Openness | Closed weights · closed lab |
| Stage | API only |
| Confidence | medium |
| Pricing (USD per M tokens) |
in $0.75 · out $4.50 · cache read $0.07 OpenRouter list price (cheapest live endpoint) · source · observed 2026-10-27 06:57 UTC |
Open alternatives 5
Nearest open-weights models by modality, context and price on this watch list. Not a quality ranking.
| Model | Org | Params | Context | $/M in | License | Why it is here |
|---|---|---|---|---|---|---|
| Qwen3.5-4B | Qwen | 4.66B | 256K | — | apache-2.0 | vision input |
| Qwen3.5-397B-A17B | Qwen | 403B | 256K | $0.39 | apache-2.0 | cheaper input price ($0.39/M vs $0.75/M), vision input |
| Kimi-K2.6 | moonshotai | 1.03T | 256K | $0.39 | other | cheaper input price ($0.39/M vs $0.75/M), vision input |
| Kimi-K2.5 | moonshotai | 1.03T | 256K | $0.45 | other | cheaper input price ($0.45/M vs $0.75/M), vision input |
| Qwen3-VL-8B-Instruct | Qwen | 8.77B | 256K | $0.25 | apache-2.0 | cheaper input price ($0.25/M vs $0.75/M), vision input |
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Sources
- openrouter openai/gpt-5.4-mini · observed 2026-10-27 06:57 UTC
Radar run: 2026-10-27 06:57 UTC · Last verified 2026-10-27 06:57 UTC