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Source: OpenAI model docs

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GPT-5 Series

gpt-5.4

Reasoning · Speedopenai/gpt-5.4OpenAI’s most capable and efficient frontier model for professional work, combining industry-leading coding, reasoning, and agentic workflows with native computer-use capabilities.
  • $2.50 / $15
  • 1.05M context
  • 128K max output
  • Text, Image input
  • Extended thinking
  • Web search
  • Knowledge cutoff Aug 2025

gpt-5.3-chat-latest

Reasoning · Speedopenai/gpt-5.3-chat-latestTuned for safe, useful answers more directly, designed for everyday usability across drafting, brainstorming, summarizing, and general writing tasks.
  • ~$1.75 / ~$14
  • 400K context
  • 128K max output
  • Text, Image input
  • Thinking
  • Web search
  • Knowledge cutoff Aug 2025

gpt-5.2

Reasoning · Speedopenai/gpt-5.2The most capable model series for professional knowledge work, with significant improvements in general intelligence, long-context understanding, agentic tool-calling, and vision.
  • $1.75 / $14
  • 400K context
  • 128K max output
  • Text, Image input
  • Thinking
  • Web search
  • Knowledge cutoff Aug 2025

gpt-5.2-pro

Reasoning · Speedopenai/gpt-5.2-proA version of GPT-5.2 that uses more compute to think harder and provide consistently better answers for complex tasks.
  • $21 / $168
  • 400K context
  • 128K max output
  • Text, Image input
  • Thinking
  • Web search
  • Knowledge cutoff Aug 2025

gpt-5.1

Reasoning · Speedopenai/gpt-5.1Improves meaningfully on both intelligence and communication style; the first model to use adaptive reasoning to decide when to think before responding.
  • $1.25 / $10
  • 400K context
  • 128K max output
  • Text, Image input
  • Thinking
  • Web search
  • Knowledge cutoff Sep 2024

gpt-5.1-codex

Reasoning · Speedopenai/gpt-5.1-codexA faster, more intelligent agentic coding model designed for long-running, project-scale work with enhanced reasoning and token efficiency.
  • $1.25 / $10
  • 400K context
  • 128K max output
  • Text, Image input
  • Thinking
  • Web search
  • Knowledge cutoff Sep 2024

gpt-5

Reasoning · Speedopenai/gpt-5OpenAI’s unified AI system representing a significant leap in intelligence, with a smart efficient model for most questions and a deeper reasoning model for harder problems.
  • $1.25 / $10
  • 400K context
  • 128K max output
  • Text, Image, Audio, Video input
  • Thinking
  • Web search
  • Knowledge cutoff Sep 2024

gpt-5-mini

Reasoning · Speedopenai/gpt-5-miniA smaller, faster variant of GPT-5’s thinking model optimized for developer use, balancing strong reasoning with lower cost and latency.
  • $0.25 / $2
  • 400K context
  • 128K max output
  • Text, Image input
  • Web search
  • Knowledge cutoff May 2024

gpt-5-nano

Reasoning · Speedopenai/gpt-5-nanoThe smallest and fastest variant in the GPT-5 family, made for developers needing maximum speed at minimal cost.
  • $0.05 / $0.40
  • 400K context
  • 128K max output
  • Text, Image input
  • Knowledge cutoff May 2024
gpt-5.1-mini does not exist as a standalone API model. Use gpt-5-mini or gpt-5.1-codex instead.

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GPT-4 Series

gpt-4.1

Reasoning · Speedopenai/gpt-4.1Excels at instruction following and tool calling with broad knowledge, featuring a 1M token context window and low latency without a reasoning step.
  • $2 / $8
  • 1.05M context
  • 32K max output
  • Text, Image input
  • Web search
  • Knowledge cutoff Jun 2024

gpt-4.1-mini

Reasoning · Speedopenai/gpt-4.1-miniA significant leap in small model performance that matches or exceeds GPT-4o in intelligence evals while reducing latency by nearly half and cost by 83%.
  • $0.40 / $1.60
  • 1M context
  • 32K max output
  • Text, Image input
  • Web search
  • Knowledge cutoff Jun 2024

gpt-4.1-nano

Reasoning · Speedopenai/gpt-4.1-nanoOpenAI’s fastest and cheapest model with a 1M token context window, ideal for classification and autocompletion tasks.
  • $0.10 / $0.40
  • 1M context
  • 32K max output
  • Text, Image input
  • Web search
  • Knowledge cutoff Jun 2024

gpt-4o

Reasoning · Speedopenai/gpt-4oAn autoregressive omni model that accepts any combination of text, audio, image, and video inputs, trained end-to-end across modalities.
  • $2.50 / $10
  • 128K context
  • 16K max output
  • Text, Image, Audio input
  • Knowledge cutoff Jun 2024

gpt-4o-mini

Reasoning · Speedopenai/gpt-4o-miniA fast, affordable small model for focused tasks that accepts text and image inputs at a fraction of the cost of frontier models.
  • $0.15 / $0.60
  • 128K context
  • 16K max output
  • Text, Image input
  • Knowledge cutoff Oct 2023

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o-Series (Reasoning)

o4-mini

Reasoning · Speedopenai/o4-miniA smaller reasoning model optimized for fast, cost-efficient reasoning with exceptional performance in math, coding, and visual tasks.
  • $1.10 / $4.40
  • 200K context
  • 100K max output
  • Text, Image input
  • Thinking
  • Web search
  • Knowledge cutoff Jun 2024

o4-mini-deep-research

Reasoning · Speedopenai/o4-mini-deep-researchDeep research variant of o4-mini designed for extended multi-step research tasks with mandatory search.
  • $2 / $8
  • 200K context
  • 100K max output
  • Text, Image input
  • Thinking
  • Web search (required)
  • Knowledge cutoff Jun 2024

o3

Reasoning · Speedopenai/o3OpenAI’s most powerful reasoning model that pushes the frontier across coding, math, science, and visual perception, ideal for complex queries requiring multi-faceted analysis.
  • $2 / $8
  • 200K context
  • 100K max output
  • Text, Image input
  • Thinking
  • Web search
  • Knowledge cutoff Jun 2024

o3-mini

Reasoning · Speedopenai/o3-miniThe most cost-efficient model in OpenAI’s reasoning series, delivering o1-level STEM performance with lower cost and faster speed.
  • $1.10 / $4.40
  • 200K context
  • 100K max output
  • Text input
  • Thinking
  • Knowledge cutoff Oct 2023

o3-pro

Reasoning · Speedopenai/o3-proA version of o3 designed to think longer and provide the most reliable, thoroughly reasoned responses for maximum performance on complex tasks.
  • $20 / $80
  • 200K context
  • 100K max output
  • Text, Image input
  • Thinking
  • Web search
  • Knowledge cutoff Jun 2024

o3-deep-research

Reasoning · Speedopenai/o3-deep-researchDeep research variant of o3 for extended multi-step research tasks with mandatory search and maximum reasoning depth.
  • $10 / $40
  • 200K context
  • 100K max output
  • Text, Image input
  • Thinking
  • Web search (required)
  • Knowledge cutoff Jun 2024

o1

Reasoning · Speedopenai/o1OpenAI’s first reasoning model, trained to think before answering by producing a long internal chain of thought, with strong performance in science, coding, and math.
  • $15 / $60
  • 200K context
  • 100K max output
  • Text, Image input
  • Thinking
  • Knowledge cutoff Oct 2023

o1-mini

Reasoning · Speedopenai/o1-miniA cost-efficient reasoning model that excels at STEM, nearly matching o1 performance at 80% lower cost. Does not support tool/function calling.
  • $1.10 / $4.40
  • 128K context
  • 65K max output
  • Text input
  • Thinking
  • Knowledge cutoff Oct 2023
Reasoning tokens are billed as output tokens on all o-series models.