Claude Opus 4.7 (Fast) vs DeepSeek V3.1 Terminus
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude Opus 4.7 (Fast) and DeepSeek V3.1 Terminus.
Claude Opus 4.7 (Fast)
Fast-mode variant of [Opus 4.7](/anthropic/claude-opus-4.7) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
DeepSeek V3.1 Terminus
DeepSeek-V3.1 Terminus is an update to [DeepSeek V3.1](/deepseek/deepseek-chat-v3.1) that maintains the model's original capabilities while addressing issues reported by users, including language consistency and agent capabilities, further optimizing the model's...
Technical Specifications
| Specification | Claude Opus 4.7 (Fast) | DeepSeek V3.1 Terminus |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Context Window | 1,000,000 tokens | 163,840 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | self hostable |
| Production Stability | beta | stable |
| API Available | Yes | Yes |
| Released Date | 2026-05-12 | 2025-09-22 |
API Pricing Comparison
Input Price per Million Tokens
Claude Opus 4.7 (Fast)
$30.00
DeepSeek V3.1 Terminus
$0.27
Output Price per Million Tokens
Claude Opus 4.7 (Fast)
$150.00
DeepSeek V3.1 Terminus
$0.95
Want to test both models live?
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Claude Opus 4.7 (Fast) Quirks & Gotchas
No developer gotchas reported.
DeepSeek V3.1 Terminus Quirks & Gotchas
No developer gotchas reported.