GPT-5.5 (medium)
Analysis Summary
GPT-5.5 (medium) is a thinking-budget variant from OpenAI's GPT-5.5 family, sitting at the frontier of measured performance with an intelligence index of 50.4, coding index of 71.5, and agentic index of 74.7. Its GPQA of 0.926, HLE of 0.406, and terminal benchmark of 0.576 confirm world-class reasoning and coding capability, while instruction following (0.710) and long-context retrieval (0.723) are among the strongest in the field.
For businesses, this translates to reliable performance across autonomous coding agents, complex multi-step workflows, long-document analysis, and high-stakes content generation. The medium reasoning budget makes it more cost-efficient than the high variant while retaining near-identical benchmark performance.
At $5 input and $30 output per million tokens, it delivers frontier capability at a price point that suits most professional workloads. Teams running agentic pipelines or software engineering automation should consider it a primary option.
Assessed June 30, 2026
Editorial notes
GPT-5.5 (medium) from OpenAI reaches a 50.4 intelligence index, 71.5 coding index, and 74.7 agentic index, placing it firmly in the world-class tier for reasoning, coding, and autonomous task execution at $5/$30 per million tokens.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How GPT-5.5 (medium) compares
GPT-5.5 (medium) ranks #9 of 385 AI models we track for overall intelligence, #6 of 129 for coding, #7 of 293 for agentic tasks. At $5.00 per million input tokens it is cheaper than 7% of comparable models.
Performance Indices
Source: Artificial Analysis
Benchmark Scores
Intelligence
Technical
Content
Benchmark data from Artificial Analysis and Hugging Face
How does GPT-5.5 (medium) stack up?
Compare side-by-side with other professional models.
Model Information
| Provider | OpenAI |
| Release Date | April 23, 2026 |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $5.00 | $0.005000 |
| Output | $30.00 | $0.030000 |
Leaderboard Categories
Frequently asked questions about GPT-5.5 (medium)
How much does GPT-5.5 (medium) cost?
GPT-5.5 (medium) costs $5.00 per million input tokens and $30.00 per million output tokens.
Is GPT-5.5 (medium) good for coding?
On our coding benchmark index, GPT-5.5 (medium) ranks #6 of 129 models, placing it in the top quartile of the field for code generation and debugging.
Who created GPT-5.5 (medium)?
GPT-5.5 (medium) is developed by OpenAI and was released on April 23, 2026.
