Benchable
Image input
File input
Text input
Text output
Unavailable
Author's Description
GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...
Key Specifications
Context
1M
Released
Apr 24, 2026
Supported Parameters
This model supports the following parameters:
Tools
Response Format
Top Logprobs
Stop
Frequency Penalty
Logprobs
Tool Choice
Include Reasoning
Max Tokens
Reasoning
Structured Outputs
Presence Penalty
Logit Bias
Seed
Features
This model supports the following features:
Structured Outputs
Tools
Reasoning
Response Format
Model Pricing
Current Pricing
| Feature | Price (per 1M tokens) |
|---|---|
| Prompt | $30 |
| Completion | $180 |
| Web Search | $10000 |
Price History
Available Endpoints
| Provider | Endpoint Name | Context Length | Pricing (Input) | Pricing (Output) |
|---|---|---|---|---|
|
OpenAI
|
OpenAI | openai/gpt-5.5-pro-20260423 | 1M | $30 / 1M tokens | $180 / 1M tokens |
No benchmark execution results are available for this model yet.
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|
|
Released | Params | Context |
|
Speed | Ability | Cost |
|---|---|---|---|---|---|---|---|
| OpenAI: GPT-5.5 Pro | Apr 24, 2026 | — | 1M |
Image input
File input
Text input
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— | — | — |
| OpenAI: GPT-5.5 Unavailable | Apr 24, 2026 | — | 1M |
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★★★★ | ★★★★★ | +$$$$$ |
| OpenAI: GPT-5.5 | Apr 24, 2026 | — | 1M |
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★★★★ | ★★★★★ | +$$$$$ |
| OpenAI: GPT-5.4 Image 2 | Apr 21, 2026 | — | 272K |
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| OpenAI: GPT-5.4 Mini | Mar 17, 2026 | — | 400K |
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★★★★★ | ★★★★ | $$$$ |
| OpenAI: GPT-5.4 Pro Unavailable | Mar 05, 2026 | — | 1M |
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| OpenAI: GPT-5.4 Pro | Mar 05, 2026 | — | 1M |
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| OpenAI: GPT-5.4 Unavailable | Mar 05, 2026 | — | 1M |
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★★★★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT-5.4 | Mar 05, 2026 | — | 1M |
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|
★★★★★ | ★★★★★ | $$$$ |
| OpenAI: GPT-5.3 Chat Unavailable | Mar 03, 2026 | — | 128K |
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|
★★★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT-5.3 Chat | Mar 03, 2026 | — | 128K |
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|
★★★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT-5.3-Codex | Feb 24, 2026 | — | 400K |
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★★★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT Audio | Jan 19, 2026 | — | 128K |
Audio input
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| OpenAI: GPT Audio Mini | Jan 19, 2026 | — | 128K |
Audio input
Text input
Audio output
Text output
|
— | — | $$$$$ |
| OpenAI: GPT-5.2-Codex | Jan 14, 2026 | — | 400K |
Image input
Text input
Text output
|
★★★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT-5.2 Chat | Dec 10, 2025 | — | 128K |
Image input
File input
Text input
Text output
|
★★★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT-5.2 Pro | Dec 10, 2025 | — | 400K |
Image input
File input
Text input
Text output
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— | — | +$$$$$ |
| OpenAI: GPT-5.2 | Dec 10, 2025 | — | 400K |
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File input
Text input
Text output
|
★★★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT-5.1-Codex-Max | Dec 04, 2025 | — | 400K |
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★★ | ★★★★ | $$$$$ |
| OpenAI: GPT-5.1 | Nov 13, 2025 | — | 400K |
Image input
File input
Text input
Text output
|
★★★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT-5.1 Chat | Nov 13, 2025 | — | 128K |
Image input
File input
Text input
Text output
|
★★★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT-5.1-Codex | Nov 13, 2025 | — | 400K |
Image input
Text input
Text output
|
★★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT-5.1-Codex-Mini | Nov 13, 2025 | — | 400K |
Image input
Text input
Text output
|
★★★★ | ★★★★★ | $$$$$ |
| OpenAI: Text Embedding 3 Large Unavailable | Oct 30, 2025 | — | 8K |
Text input
Text output
|
— | — | $ |
| OpenAI: gpt-oss-safeguard-20b | Oct 29, 2025 | 20B | 131K |
Text input
Text output
|
★★★★★ | ★★★★ | $$$ |
| OpenAI: GPT-5 Image Mini | Oct 16, 2025 | — | 400K |
Image input
File input
Text input
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— | — | $$$$$ |
| OpenAI: GPT-5 Image | Oct 14, 2025 | — | 400K |
Image input
File input
Text input
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— | — | $$$$$ |
| OpenAI: o3 Deep Research | Oct 10, 2025 | ~400B | 200K |
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File input
Text input
Text output
|
— | — | +$$$$$ |
| OpenAI: o4 Mini Deep Research | Oct 10, 2025 | — | 200K |
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File input
Text input
Text output
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— | — | $$$$$ |
| OpenAI: GPT-5 Pro | Oct 06, 2025 | — | 400K |
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File input
Text input
Text output
|
— | — | +$$$$$ |
| OpenAI: GPT-5 Codex | Sep 23, 2025 | — | 400K |
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Text input
Text output
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★★★ | ★★★★★ | $$$$$ |
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Audio input
Text input
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— | — | $$$$$ |
| OpenAI: GPT-5 Chat | Aug 07, 2025 | — | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★★★ | $$$$ |
| OpenAI: GPT-5 | Aug 07, 2025 | — | 400K |
Image input
File input
Text input
Text output
|
★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT-5 Mini | Aug 07, 2025 | — | 400K |
Image input
File input
Text input
Text output
|
★★★ | ★★★★★ | $$$$ |
| OpenAI: GPT-5 Nano | Aug 07, 2025 | — | 400K |
Image input
File input
Text input
Text output
|
★★★ | ★★★★★ | $$$$ |
| OpenAI: gpt-oss-120b | Aug 05, 2025 | 120B | 131K |
Text input
Text output
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★★★ | ★★★★ | $$$ |
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Text input
Text output
|
— | — | $$ |
| OpenAI: gpt-oss-20b | Aug 05, 2025 | 20B | 131K |
Text input
Text output
|
★★ | ★★★ | $$ |
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File input
Text input
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— | — | +$$$$$ |
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★★★ | ★★★★ | $$$$$ |
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File input
Text input
Text output
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★★ | ★★★★ | $$$$$ |
| OpenAI: o3 | Apr 16, 2025 | ~400B | 200K |
Image input
File input
Text input
Text output
|
★★ | ★★★★★ | $$$$$ |
| OpenAI: o4 Mini | Apr 16, 2025 | — | 200K |
Image input
File input
Text input
Text output
|
★★★ | ★★★★ | $$$$$ |
| OpenAI: GPT-4.1 | Apr 14, 2025 | ~1.8T | 1M |
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File input
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★★★★★ | ★★★★ | $$$$ |
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Image input
File input
Text input
Text output
|
★★★★ | ★★★ | $$$ |
| OpenAI: GPT-4.1 Nano | Apr 14, 2025 | ~50B | 1M |
Image input
File input
Text input
Text output
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★★★★★ | ★★★ | $$ |
| OpenAI: o1-pro | Mar 19, 2025 | 300B | 200K |
Image input
File input
Text input
Text output
|
★ | ★★★ | +$$$$$ |
| OpenAI: GPT-4o-mini Search Preview | Mar 12, 2025 | ~8B | 128K |
Text input
Text output
|
★★★★ | ★★ | $$ |
| OpenAI: GPT-4o Search Preview | Mar 12, 2025 | ~200B | 128K |
Text input
Text output
|
★★★ | ★★★ | $$$$$ |
| OpenAI: GPT-4.5 (Preview) Unavailable | Feb 27, 2025 | ~12.8T | 128K |
Image input
Text input
Text output
|
★★★★★ | ★★★★★ | +$$$$$ |
| OpenAI: o3 Mini High | Feb 12, 2025 | 200B | 200K |
File input
Text input
Text output
|
★★ | ★★★★ | $$$$$ |
| OpenAI: o3 Mini | Jan 31, 2025 | 200B | 200K |
File input
Text input
Text output
|
★★★ | ★★★★ | $$$$$ |
| OpenAI: o1 | Dec 17, 2024 | 300B | 200K |
Image input
File input
Text input
Text output
|
★★ | ★★★★★ | +$$$$$ |
| OpenAI: GPT-4o (2024-11-20) | Nov 20, 2024 | ~200B | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★★ | $$$$$ |
| OpenAI: o1-mini Unavailable | Sep 11, 2024 | ~100B | 128K |
Text input
Text output
|
— | ★ | $$$$$ |
| OpenAI: o1-preview Unavailable | Sep 11, 2024 | 300B | 128K |
Text input
Text output
|
★★ | ★★★★★ | +$$$$$ |
| OpenAI: o1-preview (2024-09-12) Unavailable | Sep 11, 2024 | 300B | 128K |
Text input
Text output
|
★★ | ★★★★★ | +$$$$$ |
| OpenAI: o1-mini (2024-09-12) Unavailable | Sep 11, 2024 | ~100B | 128K |
Text input
Text output
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— | ★ | $$$$$ |
| OpenAI: ChatGPT-4o Unavailable | Aug 13, 2024 | ~200B | 128K |
Image input
Text input
Text output
|
★★★★★ | ★★ | $$$$$ |
| OpenAI: GPT-4o (2024-08-06) | Aug 05, 2024 | ~200B | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★★ | $$$$$ |
| OpenAI: GPT-4o-mini | Jul 17, 2024 | ~8B | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★ | $$ |
| OpenAI: GPT-4o-mini (2024-07-18) | Jul 17, 2024 | ~8B | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★ | $$ |
| OpenAI: GPT-4o | May 12, 2024 | ~200B | 128K |
Image input
File input
Text input
Text output
|
★★★★ | ★★★★ | $$$$$ |
| OpenAI: GPT-4o (extended) Unavailable | May 12, 2024 | ~200B | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★ | +$$$$$ |
| OpenAI: GPT-4o (2024-05-13) | May 12, 2024 | ~200B | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★ | $$$$$ |
| OpenAI: GPT-4 Turbo | Apr 08, 2024 | — | 128K |
Image input
Text input
Text output
|
★★★★ | ★★★★ | +$$$$$ |
| OpenAI: GPT-3.5 Turbo (older v0613) | Jan 24, 2024 | 175B | 4K |
Text input
Text output
|
★★★★★ | ★ | $$$ |
| OpenAI: GPT-4 Turbo Preview | Jan 24, 2024 | — | 128K |
Text input
Text output
|
★★★★ | ★★ | +$$$$$ |
| OpenAI: GPT-3.5 Turbo 16k (older v1106) Unavailable | Nov 05, 2023 | 175B | 16K |
Text input
Text output
|
— | — | $$$$$ |
| OpenAI: GPT-4 Turbo (older v1106) | Nov 05, 2023 | — | 128K |
Text input
Text output
|
★★★★ | ★★★ | +$$$$$ |
| OpenAI: GPT-3.5 Turbo Instruct | Sep 27, 2023 | 175B | 4K |
Text input
Text output
|
★★★★★ | ★★ | $$$$ |
| OpenAI: GPT-3.5 Turbo 16k | Aug 27, 2023 | 175B | 16K |
Text input
Text output
|
★★★★★ | ★★★★★ | $$$$$ |
| OpenAI: GPT-3.5 Turbo 16k Unavailable | May 27, 2023 | 175B | 16K |
Text input
Text output
|
— | — | $$$$ |
| OpenAI: GPT-3.5 Turbo | May 27, 2023 | 175B | 16K |
Text input
Text output
|
— | — | $$$$ |
| OpenAI: GPT-4 | May 27, 2023 | — | 8K |
Text input
Text output
|
★★★ | ★★ | +$$$$$ |
| OpenAI: GPT-4 (older v0314) | May 27, 2023 | — | 8K |
Text input
Text output
|
★★★★ | ★★ | +$$$$$ |