head-to-head · model vs model
GPT-5.3-Codex vs Nemotron 3 Ultra
Live matchup data for GPT-5.3-Codex and Nemotron 3 Ultra: OpenRouter usage, pricing, benchmark scores, and community sentiment, refreshed daily. No verdicts — read the tape.
usage share — openrouter model rankings
Usage crossover
current leader: Nemotron 3 Ultra
source: OpenRouter model rankings · daily · 90d
through Aug 20, 2026
side by side
Spec & pricing
| Spec | GPT-5.3-Codex | Nemotron 3 Ultra |
|---|---|---|
| Vendor | OpenAI | NVIDIA |
| Homepage | openrouter.ai | openrouter.ai |
| Context window | 400K tokens | 512.3K tokens |
| Input price | $1.75/MTok | $0.6/MTok |
| Output price | $14.00/MTok | $3.60/MTok |
| Cache read | $0.17/MTok | $0.2/MTok |
| Price as of | Aug 21, 2026 · openrouter | Aug 21, 2026 · openrouter |
sources: provider pages · OpenRouter · GitHub · package registries
— = not tracked / not applicable
head to head
Benchmarks
| Benchmark | GPT-5.3-Codex | Nemotron 3 Ultra | Source |
|---|---|---|---|
| aa-agentic-index | — | 27.5 index— · nvidia/nemotron-3-ultra-550b-a55b:batch | openrouter.ai |
| aa-coding-index | — | 49.3 index— · nvidia/nemotron-3-ultra-550b-a55b:free | openrouter.ai |
| aa-intelligence-index | — | 38.3 index— · nvidia/nemotron-3-ultra-550b-a55b:batch | openrouter.ai |
best tracked score per benchmark · scores are not directly comparable across benchmarks
sources linked per row
community pulse
Reddit sentiment
| Signal | GPT-5.3-Codex | Nemotron 3 Ultra |
|---|---|---|
sentiment feed pending — Reddit pulse lands with the daily crawl | ||
source: Reddit mentions, LLM-classified sentiment · trailing 30d
awaiting first crawl
faq
Frequently asked
- Is GPT-5.3-Codex more used than Nemotron 3 Ultra?
- As of Aug 20, 2026, GPT-5.3-Codex shows 0.2% of OpenRouter token volume and Nemotron 3 Ultra shows 6% of OpenRouter token volume. The chart above tracks the full daily series with every lead change marked.
- How does GPT-5.3-Codex pricing compare to Nemotron 3 Ultra?
- GPT-5.3-Codex runs $1.75 per million input tokens and $14.00 per million output tokens (as of Aug 21, 2026). Nemotron 3 Ultra runs $0.6 per million input tokens and $3.60 per million output tokens (as of Aug 21, 2026). Full plan and per-token detail is in the spec table above, each with its source and capture date.
- How do GPT-5.3-Codex and Nemotron 3 Ultra score on coding benchmarks?
- The tape holds 0 tracked results for GPT-5.3-Codex and 9 for Nemotron 3 Ultra, but none on a shared benchmark yet — scores are listed side by side without a common baseline.
- Where does this comparison data come from?
- OpenRouter public rankings (usage), provider pricing pages (plans and per-token prices), GitHub and package registries (adoption), public benchmark leaderboards, and Reddit (sentiment). Every stored datum keeps its source URL, and the tape refreshes daily. The Token Tape publishes the data without declaring a winner.
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