Gemini 2.5 Flash-Lite vs GPT-6 Astra
Gemini 2.5 Flash-Lite (Google DeepMind) and GPT-6 Astra (OpenAI) compared on benchmarks, pricing, context window, and use-case rankings.
- GPT-6 Astra leads on overall intelligence (ECI 169 vs 134).
- Gemini 2.5 Flash-Lite is cheaper on input tokens — $0.10 vs $10.00 per 1M.
- GPT-6 Astra has a larger context window (1.1M vs 1M tokens).
- GPT-6 Astra ranks higher for coding (95th vs 6th percentile).
| Attribute | Gemini 2.5 Flash-Lite | GPT-6 Astra |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 134 | 169 |
| Coding | 6 | 95 |
| Math | 2 | 96 |
| Reasoning & Knowledge | 4 | 99 |
| Agentic & Tools | 0 | 96 |
| Specifications | ||
| Developer | Google DeepMind | OpenAI |
| Family | Gemini | GPT |
| Released | Sep 25, 2025 | Sep 3, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 1M | 1.1M |
| Price — $/M input | $0.10 | $10.00 |
| Price — $/M output | $0.40 | $50.00 |
| Inputs | text, image, file, audio, video | file, image, text |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 53% | 100% |
| GPQA Diamond | 63% | 96% |
| Humanity's Last Exam | 7% | 55% |
| LiveCodeBench | 59% | — |
| MMLU-Pro | 76% | — |
| SciCode | 19% | 56% |
| WeirdML | 35% | 93% |
| τ²-bench | 18% | — |
| APEX | — | 47% |
| ARC-AGI | — | 99% |
| ARC-AGI-2 | — | 95% |
| SimpleQA Verified | — | 76% |
| WebDev Arena | — | 1797 |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Is Gemini 2.5 Flash-Lite better than GPT-6 Astra?
On Epoch AI's Capabilities Index, GPT-6 Astra scores higher (169) than Gemini 2.5 Flash-Lite (134). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is cheaper, Gemini 2.5 Flash-Lite or GPT-6 Astra?
Gemini 2.5 Flash-Lite is cheaper on input tokens at $0.10 per million, versus $10.00 (representative OpenRouter pricing).
Which has a larger context window, Gemini 2.5 Flash-Lite or GPT-6 Astra?
GPT-6 Astra supports up to 1.1M tokens, compared with 1M for the other.
Which is better for coding, Gemini 2.5 Flash-Lite or GPT-6 Astra?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, GPT-6 Astra ranks higher — 95th vs 6th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.