GPT-5.3-Codex vs GPT-5.5 for presentations and slides
Effectively a dead heat: 98–97
Same 12 presentations and slides tasks, marked blind by three rival labs. GPT-5.5 took 2 tasks, GPT-5.3-Codex took 1, 9 tied. Tested 16 Aug 2026.
Where they differed most
Turn this paragraph into ONE slide: a headline of max 8 words, then max 4 bullets. Paragraph: 'Following an extensive review of our logistics operations, the board has decided to relocate the central warehouse from the Norwich site to a larger facility outside Peterborough. The move is scheduled for the first week of March and is expected to reduce average delivery times to our northern customers by around a day and a half. There will be no redundancies: all fourteen warehouse staff have been offered relocation packages or transfers to the Norwich retail branch. Customers should see no disruption, as the two sites will run in parallel for a fortnight during the changeover.'
### Warehouse Relocation to Improve Northern Deliveries - Board approved moving central warehouse from Norwich to a larger site outside Peterborough. - Relocation is planned for the first week of March. - Expected benefit: average delivery times to northern customers cut by ~1.5 days. - No redundancies (all 14 staff offered relocation or transfer), and no customer disruption (both sites run in parallel for two weeks).
**Warehouse Relocation Improves Northern Deliveries** - Central warehouse moving from Norwich to Peterborough area - Scheduled for first week of March - Northern delivery times cut by ~1.5 days - No redundancies; parallel running prevents disruption
Task by task
| Task | GPT-5.3-Codex | GPT-5.5 |
|---|---|---|
| Deck from a standing start | 9 | 9 |
| Speaker notes, not an essay | 10 | 10 |
| One slide, not a memo | 9 | 10 |
| The first 30 seconds | 10 | 10 |
| Slide on a diet | 10 | 10 |
| Right chart, right headline | 10 | 9 |
| Hostile Q&A prep | 10 | 10 |
| Cut it to two minutes | 10 | 10 |
| Same facts, different room | 9 | 9 |
| Forty slides into five | 10 | 10 |
| Father of the bride | 9 | 10 |
| Refuse the inflated slide | 10 | 10 |
Full receipts: GPT-5.3-Codex, GPT-5.5 · judges claude-sonnet-5, gemini-3.1-pro-preview, grok-4.5
Questions people ask
Which is better for presentations and slides: GPT-5.3-Codex or GPT-5.5?
Effectively a dead heat: GPT-5.5 edged it 98/100 to 97/100 on our presentations and slides suite — too close to matter, so pick on price or the product you already use.
How was this tested?
Both models answered the identical published presentations and slides tasks. Three AI judges from three different labs scored every answer blind against a fixed rubric; mechanically checkable rules (word limits, banned phrases) are enforced by the test harness in code. The raw outputs and judge verdicts are downloadable.
More presentations and slides head-to-heads: GPT-5.5 vs GPT-5.6 Luna · GPT-5.3-Codex vs GPT-5.6 Luna · GPT-5.5 vs GPT-5.6 Terra · GPT-5.5 vs GPT-5.6 Sol · Claude Opus 4.8 vs GPT-5.5 · Claude Fable 5 vs GPT-5.5
Full ranking: Best AI for presentations and slides · model pages: GPT-5.3-Codex, GPT-5.5