GPT-6 Astra vs Claude Opus 5.5
Rank, tier, score and price side by side, from our weekly rankings. Scores are editorial opinion based on public sources.
A
GPT-6 Astra
B
Claude Opus 5.5
- ProviderOpenAIAnthropic
- Rank#2#1Higher rank
- TierSS
- Score93.594.5Higher score
- PriceAPI $10 input / $50 output per 1M tokens$4 input / $20 output per 1M tokens (API); included in Claude Pro, Max, Team and Enterprise plans
- TaglineOpenAI's GPT-6 frontier model (September 2026) for end-to-end reasoning, coding, computer use and research, with a 1.05M-token context window.Anthropic's current Opus model (September 2026), which Anthropic says performs at the level of Claude Fable 5.1 on most work at a lower price than Opus 5.
| Attribute | GPT-6 Astra | Claude Opus 5.5 |
|---|---|---|
| Provider | OpenAI | Anthropic |
| Rank | #2 | #1Higher rank |
| Tier | S | S |
| Score | 93.5 | 94.5Higher score |
| Price | API $10 input / $50 output per 1M tokens | $4 input / $20 output per 1M tokens (API); included in Claude Pro, Max, Team and Enterprise plans |
| Tagline | OpenAI's GPT-6 frontier model (September 2026) for end-to-end reasoning, coding, computer use and research, with a 1.05M-token context window. | Anthropic's current Opus model (September 2026), which Anthropic says performs at the level of Claude Fable 5.1 on most work at a lower price than Opus 5. |