Quick answer
- OpenAI current
- GPT-6 Astra · GPT-6.1 Sol · GPT-6 Luna
- Anthropic current
- Opus 5.5 · Fable 5.1 · Sonnet 5.5 · Haiku 5.5
- Verified
- Claude October 9, 2026 · GPT-6 September 30, 2026
- Policy
- Primary vendor sources only
Current model lineup
| Model | Vendor | Price | Context | Position |
|---|---|---|---|---|
| GPT-6 Astra | OpenAI | $10 in / $50 out per MTok | 1,050,000 tokens (128K max output) | OpenAI's most capable model for hard end-to-end coding, computer use, research, and professional workflows. |
| GPT-6.1 Sol | OpenAI | $2 in / $10 out per MTok | 1,050,000 tokens (128K max output) | The newer Sol: near-Astra performance for complex coding and agentic work at one fifth of Astra's token price. |
| GPT-6 Luna | OpenAI | $0.10 in / $0.50 out per MTok | 1,050,000 tokens (128K max output) | OpenAI's most efficient GPT-6 model for focused tasks, triage, and frequent automations. |
| Claude Opus 5.5 | Anthropic | $4 in / $20 out per MTok | 1M tokens (128K max output) | Anthropic's recommended default for most workloads, optimized for long-running agentic coding and knowledge work. |
| Claude Fable 5.1 | Anthropic | $10 in / $50 out per MTok | 1M tokens (128K max output) | Anthropic's highest-capability generally available model for demanding reasoning and long-horizon agentic work. |
| Claude Sonnet 5.5 | Anthropic | $2 in / $10 out per MTok | 1M tokens (128K max output) | Anthropic's fast everyday model: Opus-class agentic coding results at half Opus 5.5's price. |
| Claude Haiku 5.5 | Anthropic | $0.10 in / $0.50 out per MTok | 1M tokens (128K max output) | Anthropic's fastest and cheapest model, the first Haiku with adaptive thinking, effort levels, and a 1M-token window. |
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A useful routing rule
Choose by task shape rather than by a single leaderboard. Default models should handle most tokens; frontier models should be an explicit escalation; cheap models should absorb repeatable work.
| Task shape | OpenAI | Anthropic |
|---|---|---|
| Everyday complex coding | GPT-6.1 Sol | Claude Opus 5.5 |
| Maximum capability | GPT-6 Astra | Claude Fable 5.1 |
| High volume / routine | GPT-6 Luna | Claude Sonnet 5.5 or Claude Haiku 5.5 |
Previous generations
The catalog keeps 10 older records for teams that still pin them and for historical comparisons. None of them is a current recommendation; the status column says where each one stands. Anthropic also retires Claude Sonnet 4.5 on November 30, 2026, and names Claude Sonnet 5.5 as its replacement.
| Model | Vendor | Price | Status |
|---|---|---|---|
| Claude Fable 5 | Anthropic | $10 in / $50 out per MTok | Superseded by Fable 5.1; still on the API |
| Claude Opus 5 | Anthropic | $5 in / $25 out per MTok | Superseded by Opus 5.5; still on the API |
| Claude Opus 4.8 | Anthropic | $5 in / $25 out per MTok | Two Opus generations back; still on the API |
| Claude Sonnet 5 | Anthropic | $2 in / $10 out per MTok | Superseded by Sonnet 5.5; still on the API |
| Claude Haiku 4.5 | Anthropic | $1 in / $5 out per MTok | Superseded by Haiku 5.5; still on the API |
| GPT-6 Sol | OpenAI | $2 in / $10 out per MTok | The previous Sol, still selectable in Codex; OpenAI now recommends GPT-6.1 Sol |
| GPT-5.6 Sol | OpenAI | $4 in / $20 out per MTok | Remains in Codex during the GPT-6 rollout |
| GPT-5.6 Terra | OpenAI | $2 in / $12 out per MTok | Remains in Codex during the GPT-6 rollout |
| GPT-5.6 Luna | OpenAI | $0.20 in / $1.20 out per MTok | Remains in Codex during the GPT-6 rollout |
| GPT-5.5 | OpenAI | $5 in / $30 out per MTok | Leaves Codex with ChatGPT sign-in on October 14, 2026; stays on the API |
Verification sources
OpenAI: latest model guide, the Codex models page and individual model pages. Anthropic: models overview and individual model pages. Benchmarks are labeled vendor-published when applicable.