GPT-4.5 — pricing & specs
GPT-4.5 is a flagship model from OpenAI, at capability tier 7 of 8. Live $/M-token pricing and specs from the Mintok catalog.
$/M-token pricing
What GPT-4.5 costs in practice
At $15/M output tokens, GPT-4.5 is the 2nd-cheapest of 4 priced tier-7 models in the Mintok catalog — about 0% below the tier median of $15/M.
| Scenario | Est. cost |
|---|---|
| 1M input + 1M output tokens | $18.00 |
| A 10K-token request (8K in / 2K out) | $0.054 |
| 1,000 agent runs (~2K in / 500 out each) | $13.50 |
| 1M-token RAG chat session (900K cached in / 100K out) | $1.77 |
Estimated from list price at the token mixes shown; your real cost depends on prompt/response length and cache hit-rate. Model your own volume →
Specifications
- Vendor
- OpenAI
- Family
- GPT-
- Capability tier
- 7 / 8
- Size class
- FLAGSHIP
- Category
- GENERAL
- Parameters
- 1,800B total · 300B active (MoE)
- Context window
- 128,000 tokens
- Licensing
- Proprietary
Carbon footprint (modeled)
Modeled decode on a reference NVIDIA Rubin Ultra VR300 at 50% MBU, batch 32, global-avg grid. Compare all models & grids →
Alternatives at tier 7
Same capability tier, sorted by output price — the cheaper-capable options.
- Gemini 2.5 ProGoogle$10/M out
- Grok-3xAI$15/M out
- Claude Opus 4.8Anthropic$25/M out
- LLaMA 3.1 405BMetaopen/M out
- Llama 3.1 405BMetaopen/M out
- Claude Opus 4.7Anthropicopen/M out
FAQ
How much does GPT-4.5 cost per token?
GPT-4.5 costs $3 per million input tokens and $15 per million output tokens (cached input $0.30/M).
Is GPT-4.5 expensive?
At $15/M output tokens, GPT-4.5 is the 2nd-cheapest of 4 priced tier-7 models in the Mintok catalog — about 0% below the tier median of $15/M.
What does a typical request with GPT-4.5 cost?
At list price, a 10K-token request (8K in / 2K out) with GPT-4.5 costs about $0.054, and 1,000 agent runs (~2K in / 500 out each) about $13.50.
What is GPT-4.5's context window?
GPT-4.5 supports a 128,000-token context window.
What capability tier is GPT-4.5?
GPT-4.5 sits at capability tier 7 of 8 on the Mintok scale (FLAGSHIP size class).
Is GPT-4.5 open-source or proprietary?
GPT-4.5 is a proprietary model from OpenAI, accessed via API.
Put GPT-4.5 to work
Benchmark it on your prompts, or size a deployment and compare $/M-token against alternatives.
Pricing and specs are maintained by Mintok's catalog watchers from public sources. Not investment advice. Methodology.