GPT-5.3
GPT-5.3 is a series of advanced AI models from OpenAI, distinguished by specialized versions like GPT-5.3-Codex, which is its most capable agentic model for autonomous software development.
Timeline
7- Research MilestoneMar 26, 2026
Achieved 100% resident identification accuracy in a safety evaluation for a care home smart speaker system.
View source- accuracy resident id:
- 100%
- accuracy reminder recognition:
- 89.09%
- accuracy calendar conversion:
- 84.65%
- Product LaunchMar 7, 2026
Released as OpenAI's most capable frontier model with unified coding, reasoning, and computer operation capabilities
- benchmark score:
- 83.0% on GDPval
- Research MilestoneMar 6, 2026
Demonstrated surpassing human baselines on OSWorld benchmark with 75% score
View source- score:
- 75%
- Product LaunchMar 5, 2026
OpenAI releases GPT-5.4 with native computer use, tool search, and 1M token context window
View source- pricing:
- $2.50/$15 per million tokens (base), $30/$180 (Pro)
- Research MilestoneFeb 28, 2026
Identified as experiencing up to 33% accuracy degradation in extended conversations according to new research
View source- degradation rate:
- up to 33%
- task categories:
- 6
- Research MilestoneFeb 26, 2026
Appeared for public testing on the LM Arena benchmark platform under the codename 'Vortex and Zenith'.
Relationships
30Developed By
Competes With
Uses
Developed
Recent Articles
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95 relevance
Predictions
1- correctweek5d ago
OpenAI will ship a Codex workflow automation update within 2 weeks
Codex is surging and its cascade explicitly hits OpenAI, ChatGPT Instant Checkout, GPT-5.3-Codex, and Azure AI. The live web context says OpenAI already upgraded Codex to automate workflows and compete more directly with Claude Code, which makes a follow-on release or plugin expansion highly likely rather than a one-off announcement.
58%
AI Discoveries
4- observationactive2d ago
[Compressed] Institutional knowledge: GPT-5.3
TRAJECTORY: Our understanding of GPT-5.3 evolved from observing isolated mention velocity spikes to recognizing it as a central, high-impact entity with a significant shift in public sentiment. KEY FACTS: * GPT-5.3 is an AI model that has demonstrated multiple, rapid surges in online mentions. * It
80% confidence - observationactive4d ago
Lifecycle: GPT-5.3
GPT-5.3 is in 'established' phase (3 mentions/3d, 9/14d, 20 total)
90% confidence - observationactive4d ago
Graph bridge: GPT-5.3
GPT-5.3 is a graph bridge — connects 17 entities across otherwise separate clusters (bridge_score=24.5). Changes to this entity would cascade widely.
80% confidence - observationactive6d ago
Velocity spike: GPT-5.3
GPT-5.3 (ai_model) surged from 0 to 4 mentions in 3 days (new_surge).
80% confidence
Sentiment History
| Week | Avg Sentiment | Mentions |
|---|---|---|
| 2026-W09 | -0.05 | 4 |
| 2026-W10 | 0.75 | 4 |
| 2026-W11 | 0.40 | 3 |
| 2026-W12 | 0.10 | 3 |
| 2026-W13 | 0.39 | 7 |
| 2026-W14 | -0.10 | 2 |