Anthropic Claude Haiku 4.5 vs OpenAI GPT-6.1 Terra Pro
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Both cost about the same at a typical 3:1 input/output mix.
- GPT-6.1 Terra Pro accepts longer prompts: 1M vs 200K tokens.
- GPT-6.1 Terra Pro is the newer model (released 2026-10-26).
| Claude Haiku 4.5 | GPT-6.1 Terra Pro | |
|---|---|---|
| Vendor | Anthropic | OpenAI |
| Released | 2025-10-15 | 2026-10-26 |
| Input / 1M | $1.00 | $1.00 |
| Output / 1M | $5.00 | $5.00 |
| Cached input / 1M | $0.10 | $0.05 |
| Blended / 1M (3:1) | $2.00 | $2.00 |
| Context | 200K | 1M |
| Max output | 64K | 128K |
| Accepts | text, image, file | text, image, file |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 8 | 4 |
| Cheapest provider, output | $5.00 | $5.00 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | Operational | Operational |
Cost calculator
Claude Haiku 4.5
$135 per month$4.50 per day
GPT-6.1 Terra Pro
$135 per month$4.50 per day
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare Claude Haiku 4.5 with
Compare GPT-6.1 Terra Pro with