// alternatives · October 2026
GPT-6.1 Terra alternatives
Cheaper models that come close, budget substitutes, and the cheapest step up — chosen on published LiveBench scores and live list price, never on our opinion. Every model here supports tool calling and image input, as GPT-6.1 Terra does.
The closest cheaper alternative to GPT-6.1 Terra is DeepSeek V4.1 Flash 1017 — 3.8 points lower overall, 74% cheaper on LiveBench and list price.
GPT-6.1 Terra: 77.8 overall on LiveBench, $2.00 per 1M blended tokens, about $720.00/mo for a RAG assistant.
Cheaper, close in quality
Lower list price and within 5 points of GPT-6.1 Terra on LiveBench overall — the switches least likely to be noticed by users. Strongest first.
| Model | Overall | vs GPT-6.1 Terra | Blended / 1M | RAG assistant | Context |
|---|---|---|---|---|---|
| DeepSeek V4.1 Flash 1017deepseek 3.8 points lower overall, 74% cheaper. Head to head → | 74.0 | −3.8 | $0.525−74% | $194.40/mo | 1.0M |
Budget substitutes
Within 15 points of GPT-6.1 Terra, cheapest first — and only models that are the best score at their price, so nothing here is beaten by a cheaper pick. Worth testing for high-volume traffic where the last few points matter less than the bill.
| Model | Overall | vs GPT-6.1 Terra | Blended / 1M | RAG assistant | Context |
|---|---|---|---|---|---|
| Claude Haiku 5.5anthropic 7.9 points lower overall, 90% cheaper. Head to head → | 69.8 | −7.9 | $0.200−90% | $74.00/mo | 1M |
Match it on one task for less
For each LiveBench category, the cheapest model that scores at least as well as GPT-6.1 Terra there. Useful when your workload is mostly one kind of task.
| Category | Cheapest match | Score | Blended / 1M |
|---|---|---|---|
| Coding | DeepSeek V4.1 Flash 1017 | 96.0 vs 94.3 | $0.525−74% |
| Reasoning | DeepSeek V4.1 Flash 1017 | 89.1 vs 88.7 | $0.525−74% |
| Research | Claude Haiku 5.5 | 81.9 vs 73.9 | $0.200−90% |
| Documents & design | Claude Haiku 5.5 | 83.1 vs 82.3 | $0.200−90% |
Stronger options, cheapest first
Models that beat GPT-6.1 Terra on LiveBench overall, ordered by what the upgrade costs.
| Model | Overall | vs GPT-6.1 Terra | Blended / 1M | RAG assistant | Context |
|---|---|---|---|---|---|
| Gemini 4 Argongoogle 1.5 points higher overall, 100% more expensive. Head to head → | 79.3 | +1.5 | $4.00 | $1,440/mo | 1.0M |
| GPT-6.1 Solopenai 6.3 points higher overall, 100% more expensive. Head to head → | 84.1 | +6.3 | $4.00 | $1,440/mo | 1.1M |
| Claude Sonnet 5.5anthropic 2.2 points higher overall, 100% more expensive. Head to head → | 80.0 | +2.2 | $4.00 | $1,440/mo | 1M |
| Claude Opus 5.5anthropic 7.4 points higher overall, 300% more expensive. Head to head → | 85.1 | +7.4 | $8.00 | $2,880/mo | 1M |
| GPT-6 Astraopenai 7.8 points higher overall, 900% more expensive. Head to head → | 85.6 | +7.8 | $20.00 | $7,400/mo | 1.1M |
GPT-6.1 Terra alternatives FAQ
What is the best alternative to GPT-6.1 Terra?
DeepSeek V4.1 Flash 1017. 3.8 points lower overall, 74% cheaper. Every suggestion supports tool calling and image input, like GPT-6.1 Terra.
What is the cheapest alternative to GPT-6.1 Terra?
Claude Haiku 5.5 at $0.200 per 1M blended tokens, scoring 69.8 overall against GPT-6.1 Terra's 77.8. On a RAG assistant at 100K requests a month that is $74.00 instead of $720.00.
Which model is better than GPT-6.1 Terra?
The cheapest model that scores higher overall on LiveBench is Gemini 4 Argon — 1.5 points higher overall, 100% more expensive.
Is there a cheaper model that matches GPT-6.1 Terra on specific tasks?
Yes, in 4 of the seven LiveBench categories. For example, coding: DeepSeek V4.1 Flash 1017 (96.0 vs 94.3); reasoning: DeepSeek V4.1 Flash 1017 (89.1 vs 88.7); research: Claude Haiku 5.5 (81.9 vs 73.9).
How alternatives are chosen
- Scores — LiveBench release 2026-10-25. Only models with a published run are suggested on quality; a missing model means “not evaluated”, not “worse”.
- Prices — live list prices from OpenRouter, blended 3:1 input:output. Monthly figures price a RAG assistant with the published cached-input rate where there is one.
- Same job — suggestions must support every capability GPT-6.1 Terra has among tool calling and image input. Other listings of the same model (free or batch tiers) are variants, not alternatives, and are left out.
A few points on a public benchmark can hide large differences on your own tasks. Shortlist here, then decide with an eval — how to build one.