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
8- 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
- score:
- 75%
- Research MilestoneMar 6, 2026
Surpassed human baseline on OSWorld benchmark with 75% score
- score:
- 75%
- human baseline:
- 72.4%
- Product LaunchMar 5, 2026
Upcoming model launch featuring 1 million token context window, matching competitors
- Product LaunchMar 5, 2026
OpenAI releases GPT-5.4 with native computer use, tool search, and 1M token context window
- pricing:
- $2.50/$15 per million tokens (base), $30/$180 (Pro)
- Product LaunchMar 1, 2026
Expected to follow shortly after DeepSeek v4 release
- Research MilestoneFeb 28, 2026
Identified as experiencing up to 33% accuracy degradation in extended conversations according to new research
- 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
17Uses
Competes With
Developed
Recent Articles
12How to Orchestrate Claude Code with GPT and Gemini Using CLI Calls and Shared Context Files
~A developer's system for making Claude Code orchestrate GPT and Gemini via CLI calls, using shared markdown files for persistent context and a session
75 relevanceIndustry Executives Signal Unprecedented AI Acceleration, With GPT-5.4 and Opus 4.6 Cited as Successes
+A confluence of executive commentary and rapid model releases points to an intense six-month acceleration in AI capability. Sam Altman states internal
85 relevanceThe Self-Improving AI Era Begins: GPT-5.4 and Autonomous Research Breakthroughs
+OpenAI's GPT-5.4 release and Andrej Karpathy's autonomous AI research experiment signal a paradigm shift where AI systems can now improve their own un
75 relevanceSpine Swarms: How an 8-Person Team Outperformed AI Giants in Deep Research
~A small team of engineers has developed Spine Swarms, an AI system that reportedly outperforms Google, Perplexity, Claude, and GPT-5.2 in deep researc
95 relevanceInside Balyasny's AI Research Engine: How Hedge Funds Are Deploying Next-Gen AI for Alpha Generation
+Balyasny Asset Management has built a sophisticated AI research system using OpenAI's GPT-5.3 models, implementing rigorous evaluation frameworks and
75 relevanceSoftBank's $40 Billion Bet: The Largest AI Investment Loan in History
+SoftBank Group is seeking a record $40 billion loan primarily to finance its investment in OpenAI, marking the largest-ever dollar-denominated borrowi
85 relevanceGPT-5.4 Matches Human Experts on Professional Tasks 82% of the Time, Study Reveals
+OpenAI's latest model, GPT-5.4, now ties or beats human experts on professional tasks 82% of the time according to the GDPval benchmark. This represen
85 relevanceOpenAI's GPT-5.4: The Million-Token Context Window That Changes Everything
+OpenAI's upcoming GPT-5.4 will feature a groundbreaking 1 million token context window, matching competitors like Gemini and Claude. The model introdu
95 relevanceThe AI Race Intensifies: DeepSeek v4 and GPT-5.3 Set for Imminent Release
+DeepSeek v4 is reportedly launching next week, with OpenAI's GPT-5.3 expected to follow shortly. This rapid succession of releases signals escalating
85 relevanceEvolver: How AI-Driven Evolution Is Creating GPT-5-Level Performance Without Training
~Imbue's newly open-sourced Evolver tool uses LLMs to automatically optimize code and prompts through evolutionary algorithms, achieving 95% on ARC-AGI
95 relevanceThe Long Conversation Problem: Why Even Advanced AI Models Struggle with Extended Dialogues
-New research reveals that even cutting-edge LLMs like GPT-5.2 and Claude 4.6 experience significant accuracy degradation—up to 33%—in extended convers
75 relevanceWhen AI Plays War Games: Study Reveals Alarming Nuclear Escalation Tendencies
-A King's College London study found leading AI models like GPT-5.2, Claude Sonnet 4, and Gemini 3 Flash frequently recommended nuclear strikes in simu
80 relevance
Predictions
No predictions linked to this entity.
AI Discoveries
6- observationactive4d ago
Lifecycle: GPT-5.3
GPT-5.3 is in 'active' phase (2 mentions/3d, 10/14d, 10 total)
90% confidence - observationactive4d ago
Graph bridge: GPT-5.3
GPT-5.3 is a graph bridge — connects 16 entities across otherwise separate clusters (bridge_score=8.9). Changes to this entity would cascade widely.
80% confidence - hypothesisactiveMar 8, 2026
H: The next major OpenAI model release (after GPT-5.4) will be a 'GPT-Agent' or 'GPT-OS'—a system expli
The next major OpenAI model release (after GPT-5.4) will be a 'GPT-Agent' or 'GPT-OS'—a system explicitly architected as a platform for hosting and orchestrating third-party autonomous agents, not just a conversational endpoint.
80% confidence - observationactiveMar 7, 2026
Velocity spike: GPT-5.3
GPT-5.3 (ai_model) surged from 2 to 5 mentions in 3 days (velocity_spike).
80% confidence - observationactiveMar 3, 2026
Sentiment reversal: GPT-5.3
GPT-5.3 sentiment flipped from -0.27 to 0.50 (negative→positive).
70% confidence - observationactiveFeb 28, 2026
Velocity spike: GPT-5.3
GPT-5.3 (ai_model) surged from 0 to 3 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 | 1 |