AI Rankings

OpenAI

GPT-5.5

OpenAI's April 2026 flagship for complex professional and agentic coding work, since followed by the GPT-5.6 family (July 2026) and GPT-6 Astra (September 2026).

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Our editorial assessment, based on the public sources listed below. Last reviewed .

Overall rank
#23
Tier
A
Score
84.0
Main category
Coding

Strengths

  • Strong Terminal-Bench 2.0 and GDPval results among reported peers at launch
  • Strong conceptual grasp of large codebases per early testers
  • Improved inference efficiency over GPT-5.4

Considerations

  • Higher API cost than mid-tier variants
  • Some reports cite elevated hallucination rates on edge prompts
  • Succeeded by GPT-5.6 Sol, which OpenAI prices lower at $4/$20 per 1M tokens

Price

API $5 input / $30 output per 1M tokens

Shown for reference — price is not part of the score.

Score breakdown

Performance
84.0
55% of score
Reputation
88.0
35% of score
Recency
70.0
10% of score

The overall score combines these sub-scores using the weights shown. How we score →

Verification status

Each field carries its own re-verification date. Amber means older than 90 days — treat those figures as stale until re-checked.

Pricing
Benchmark
Reputation
Feature list

Checked against the sources listed below.

Sources

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