VS
- At the top end, Claude Fable 5.1 costs $50.00 per million output tokens versus $100.00 for gpt-6-cyber.
Anthropic vs OpenAI at a glance
| Anthropic | OpenAI | |
|---|---|---|
| Cheapest model | Claude Haiku 5.5 · $0.10 in / $0.50 out | gpt-6-luna · $0.10 in / $0.50 out |
| Top-tier model | Claude Fable 5.1 · $10.00 in / $50.00 out | gpt-6-cyber · $20.00 in / $100.00 out |
| Models tracked | 4 | 11 |
| Prompt-caching discount | Yes | Yes |
| Category | LLM API | LLM API |
| Plans tracked | 4 | 11 |
Green marks the lower price.
Prices last checked November 8, 2026 · re-checked twice a week from official pricing pages and APIs · How we collect prices
Every plan, side by side
Anthropic
| Model | Price |
|---|---|
| Fable 5.1 | $10.00 in / $50.00 out |
| Opus 5.5 | $4.00 in / $20.00 out |
| Sonnet 5.5 | $2.00 in / $10.00 out |
| Haiku 5.5 | $0.10 in / $0.50 out |
OpenAI
| Model | Price |
|---|---|
| gpt-6-astra | $10.00 in / $50.00 out |
| gpt-6.1-sol | $2.00 in / $10.00 out |
| gpt-6-luna | $0.10 in / $0.50 out |
| gpt-5.6-sol | $4.00 in / $20.00 out |
| gpt-5.6-cyber | $12.50 in / $75.00 out |
| gpt-realtime-2.1 | $4.00 in / $24.00 out |
| gpt-realtime-2.1-mini | $0.60 in / $2.40 out |
| chat-latest | $5.00 in / $30.00 out |
| gpt-6.1-terra | $1.00 in / $5.00 out |
| gpt-5.3-codex | $1.75 in / $14.00 out |
| gpt-6-cyber | $20.00 in / $100.00 out |
Related comparisons
Frequently asked questions
Is Anthropic or OpenAI cheaper?
At the top end, Claude Fable 5.1 costs $50.00 per million output tokens versus $100.00 for gpt-6-cyber.
How current is this Anthropic vs OpenAI comparison?
Both providers' prices come from CloudMart's live catalog, last checked November 8, 2026. The page is rebuilt from current data on every visit.
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