Provider pricing
OpenAI AI API pricing
OpenAI has 60 priced models in the public snapshot. For 1,000 input and 500 output tokens, GPT OSS 120b has the lowest recorded request cost at $0.000089, with $0.039 input and $0.1 output per million tokens.
Best for
Teams that need a one-stop shop with models for every budget and use case.
Strengths
- Widest model range — 5 tiers from $0.05 to $30/M input
- Industry-leading reasoning models (o4-mini, o3-mini)
- Best ecosystem: function calling, assistants API, batch processing
- 50% discount on cached prompts, 50% off batch API
Tracked OpenAI models
| Model | Input $/M | Output $/M | Context | Tier | Best for |
|---|---|---|---|---|---|
| GPT-6 Astra | $10.00 | $50.00 | 1,050,000 | Premium | Frontier reasoning, computer use, browsing, cybersecurity and long-running agents |
| GPT-5.6 | $4.00 | $20.00 | 1,050,000 | Flagship | Next-gen flagship — deeper reasoning, multimodal, long-context agents |
| GPT-5.5 Pro | $30.00 | $180.00 | 256,000 | Premium | Frontier reasoning, research, agentic workflows |
| GPT-5.5 | $5.00 | $30.00 | 256,000 | Flagship | Most intuitive flagship — complex multi-step tasks, agents |
| GPT-5.4 Pro | $30.00 | $180.00 | 256,000 | Premium | Highly complex tasks and cutting-edge research |
| GPT-5.4 | $2.50 | $15.00 | 128,000 | Flagship | General purpose, agents, coding |
| GPT-5.4 Mini | $0.400 | $1.60 | 128,000 | Mid-tier | Production apps, moderate complexity |
| GPT-5.4 Nano | $0.050 | $0.400 | 128,000 | Budget | Classification, routing, simple tasks |
| GPT-5.2 | $1.75 | $14.00 | 128,000 | Flagship | Coding, analysis |
| GPT-4.1 | $2.00 | $8.00 | 1,000,000 | Flagship | Coding, analysis, long-context tasks |
| GPT-4.1 Mini | $0.400 | $1.60 | 1,000,000 | Mid-tier | Structured tasks, cost-efficient coding |
| GPT-4.1 Nano | $0.100 | $0.400 | 1,000,000 | Budget | High-volume, low-latency workloads |
| o3 | $2.00 | $8.00 | 200,000 | Reasoning | Complex reasoning, research, math |
| o4-mini | $1.10 | $4.40 | 128,000 | Reasoning | Strong problem-solving and logical deduction |
| o3-mini | $1.10 | $4.40 | 128,000 | Reasoning | Strong problem-solving and logical deduction |
| GPT-6.1 Sol | $2.00 | $10.00 | 1,050,000 | Flagship | Latest GPT-6 workhorse for coding and agents |
| GPT-6.1 Sol Pro | $2.00 | $10.00 | 1,050,000 | Reasoning | Extended-reasoning GPT-6.1 Sol variant |
| GPT-6 Sol | $2.00 | $10.00 | 1,050,000 | Flagship | General-purpose GPT-6 model for coding and agents |
| GPT-6 Sol Pro | $2.00 | $10.00 | 1,050,000 | Reasoning | Extended-reasoning GPT-6 Sol variant |
| GPT-6 Luna | $0.100 | $0.500 | 1,050,000 | Budget | Ultra-low-cost high-volume GPT-6 tier |
| GPT-6 Luna Pro | $0.100 | $0.500 | 1,050,000 | Budget | Low-cost GPT-6 tier with extended reasoning |
| GPT-5 | $1.25 | $10.00 | 400,000 | Flagship | Powerful all-rounder for accuracy, nuance, and multimodal text+image tasks |
| GPT-5 Mini | $0.250 | $2.00 | 400,000 | Mid-tier | Lower-cost GPT-5 for strong general performance |
| GPT-5 Nano | $0.050 | $0.400 | 400,000 | Budget | Fast, low-cost OpenAI model for simple or high-volume tasks |
| GPT-Image 2 | $10.00 | $40.00 | 0 | Premium | State-of-the-art image generation via /v1/images/generations |
| GPT-Image 1 Mini | $2.00 | $8.00 | 0 | Mid-tier | Cost-efficient image generation via /v1/images/generations |
| o5 | $3.00 | $12.00 | 256,000 | Reasoning | Next-gen o-series reasoning — math, science, agentic planning |
| o5-mini | $0.800 | $3.20 | 256,000 | Reasoning | Compact o5 reasoning for everyday problem solving |
| GPT-4.5 | $75.00 | $150.00 | 128,000 | Premium | Original GPT-4.5 research preview — broad knowledge and writing |
| GPT-4o Realtime | $5.00 | $20.00 | 128,000 | Flagship | Low-latency speech-to-speech Realtime API model |
Last updated: · Source: OpenAI pricing · Methodology
Frequently asked questions
How much does the OpenAI API cost?
OpenAI has 60 priced models in the public snapshot. For 1,000 input and 500 output tokens, GPT OSS 120b has the lowest recorded request cost at $0.000089, with $0.039 input and $0.1 output per million tokens.
Which OpenAI model is cheapest?
GPT OSS 120b is the lowest-cost recorded model for the 1,000-input/500-output example. Prices are $0.039 input and $0.1 output per million tokens; different workloads may change the ranking.
Does OpenAI have cached or batch prices?
Cached input: $0.0195 per million tokens under the existing provider cache rules. Batch: not recorded in this dataset. Eligibility and cache-write charges depend on the provider; these discounts are not automatically stacked.
How often are provider prices verified?
The live pricing table synchronizes stored model records daily; public file snapshots update when the site is rebuilt. Synchronization is not independent provider verification. Snapshot updated 2026-10-31; only explicit per-model dates are verification records.