OpenAI
GPT-5.6 Terra
Mid-tier GPT-5.6: price/quality balance, successor to GPT-5 Standard.
Scores
Quality
9.2/10
Speed
8.6/10
Ease of use
8.2/10
Value
5/10
Specifications
- Category
- Large Language Models (LLM)
- Pricing
- $60–300/mo
- Context
- 1000K tokens
- Documentation
- Open ↗
Pros
- + Price/quality balance
- + Production-ready
- + Cheaper than Sol
Cons
- − Weaker than Sol on hard agentic tasks
Similar models
GPT-5.6 Sol
OpenAI
OpenAI flagship (GA since July 9, 2026): agentic coding leader, 88.8% on Terminal-Bench 2.1.
Quality
9.7/10
Speed
8.2/10
Ease of use
8/10
Value
3/10
- + Top agentic coding
- + Strong reasoning
GPT-5.6 Luna
OpenAI
Fastest and cheapest GPT-5.6 tier for light tasks and high throughput.
Quality
8.4/10
Speed
9.5/10
Ease of use
8.5/10
Value
8/10
- + High speed
- + Low cost
GPT-5.5
OpenAI
Previous OpenAI flagship — stable fallback, cheaper than GPT-5.6.
Quality
9.1/10
Speed
8.4/10
Ease of use
8/10
Value
5/10
- + Stable fallback
- + Cheaper than 5.6
Claude Opus 4.8
Anthropic
Anthropic flagship: best for deep refactoring and judgment; ~4× fewer missed code defects.
Quality
9.8/10
Speed
7.8/10
Ease of use
8/10
Value
2/10
- + Top code quality
- + 1M context
Claude Sonnet 5
Anthropic
Anthropic mid-tier: agentic coding close to Opus 4.8 at a lower price.
Quality
9.4/10
Speed
8.5/10
Ease of use
8.2/10
Value
5/10
- + Near-Opus quality
- + 1M context
Claude Haiku 4.5
Anthropic
Fast budget Claude for simple and high-volume tasks.
Quality
8.2/10
Speed
9.4/10
Ease of use
8.5/10
Value
8/10
- + Cheap
- + Fast